I found this on the internet.

1.    Smile
2.    Laugh
3.    Run your fingers through your hair
4.    Touch them gently on the arm/shoulder
5.    Give them a hug
6.    Tease them
7.    Complement their clothes
8.    Say, "It seems like forever since I last saw you"
9.    Whisper
10.    Offer them a blanket または コート if it's cold
11.    Offer to buy them a drink
12.    Lean toward them
13.    Be Positive
14.    Wiink
15.    Send them a text message
16.    Find them on Myspace または フェイスブック and add them
17.    Drop something and see if they pick it up
18.    Brush against them "accidentally"
19.    Flutter your eyelashes
20.    If it's a nice day, suggest あなた go outside to enjoy the sunshine
21.    If it's a cold day, suggest to go get hot chocolate
22.    Be yourself
23.    Tell them something about who あなた are; a secret hope, a silly fear...
24.    Ask them what shampoo they use
25.    Open the door for them
26.    Carry something heavy for them
27.    Complement them on jewelry they're wearing
28.    Ask what they like to do for fun
29.    Ask 質問 about their interests
30.    Invite them to go stargazing with you
31.    Send them お花 anonymously
32.    Give them your phone number または Eメール address
33.    Tell them they have beautiful eyes または a beautiful smile
34.    Laugh at their jokes
35.    Tell them, "I bet あなた can't guess what I'm thinking..." then when they fail, tell them something flirty, like "you look great today", または "We should skip class and go to the beach".
36.    Let them catch あなた checking them out
37.    Touch yourself, maybe put your hair behind your ear, または adjust your clothing
38.    Whistle at them
39.    Say, "Is it hot in here, または is it just you?"
40.    Blush
41.    Bite your lip and look down
42.    Give your full attention to the other person
43.    Make them a CD
44.    Invite them to a movie
45.    Invite them to watch a 表示する または sporting event
46.    Dare them to do something
47.    Be competative -- "I bet I can beat あなた at racketball"
48.    Brush their hair out of their eyes
49.    Take them for a walk outside, and sit down in the grass.
50.    If you're sitting outside, offer to help her up.
51.    Let him notice あなた smelling him
52.    Tell her she smells great
53.    Ask them how their 日 was.
54.    Ask them if they're doing anything fun this weekend.
55.    Invite them to go with あなた and your フレンズ someplace.
56.    Teach them how to do something
57.    Tell them あなた were thinking of them the other day.
58.    Lick your lips.
59.    Mirror their body language; if they talk slowly, talk slower; if they're leaning forward, lean フォワード, 前進, 楽しみにして toward them, too.
60.    Call them for no reason other than to say, "Hello".
61.    Suggest a book または movie あなた think they'd really like; they'll be impressed あなた are tuned into their tastes and are thinking of them.
62.    Stand up straight and don't slouch
63.    Say their name often
64.    Nod when they speak
65.    Ask them their opinion on something in the news.
66.    Leave a note someplace for them to find it
67.    Teach them a few dance moves
68.    Ask them what their お気に入り デザート is.
69.    Tell them あなた had a dream with them in it.
70.    Attend an event that they are in または want to go to.
71.    Offer them something you're eating -- gum または a piece of candy.
72.    Tell them あなた want their アドバイス または input on an issue.
73.    Ask them what they would think if あなた asked them out.
74.    Make sure to tell them "good luck" if they are going someplace または doing something important-- taking a test, interviewing for a job, etc.
75.    Use a corny pickupline to make them laugh.
76.    Win them a prize.
77.    If they ask あなた a question, say, "Maybe I'll tell you... if you'll let me buy あなた lunch."
78.    If they looks sad, try to cheer them up.
79.    Poke them
80.    Ask if they need any help with what they're doing
81.    Hold their hand
82.    Tickle them
83.    Invite them over for a candlelight dinner
84.    Ask them what they are thinking, right now
85.    Ask them to sit 次 to you
86.    Tell them a secret
87.    Play a game with them
88.    Pay attention to their body language
89.    Be mysterious
90.    Make up a riddle for them to solve, with the prize being a 日付 with you, a kiss, etc.
91.    Tell them a joke
92.    Cook something for them (cookies, または even a dinner).
93.    Dedicate a song to them on the radio
94.    Tell them, "I think I want to flirt with you"
95.    Invite them to go bike riding with you
96.    Say it's cold, and suggest あなた should scoot closer to avoid hypothermia
97.    Ask them what they want in a guy/girl
98.    Use sexually suggestive language in a context with something they're interested in (like, "So if you're into astronomy, あなた must have no problem staying up all night long")
99.    Tell them あなた enjoy their company
100.    Ask lightly, "Are あなた flirting with me?"
101.    Ask them what their name means; if they don't know, あなた can look it up