What do あなた do when your having problems with the あなた 愛 but is falling for some one else :/

Sorry hon, i dont know what to tell you. Im pretty much having the same problem.

...

I dunno, haven't had a crush... または a boyfriend...

There are some grammatical errors in your question.

I'm not sure, I've been in 愛 with the same guy for 3+ years.

That's not an easy 質問 to answer. Maybe あなた could do something special that reminds him of why he fell for あなた in the first place. Sometimes there is no way to stop it. Sad to say, it happened to me overnight with pretty much no warning.