I like someone else

I have feeling for a guy at the gym

I love my boyfried and I been with him for 7 years but when I with him all I can think about is kissing him

he so nice always cuddling me and saying nice things

what can do to stop this feeling

Its VERY normal to have crushes on other people, its your bodies natural chemical reaction when you feel attraction (and at a base level the desire to reproduce or be intimate) with another person. First of all dont beat yourself up about it, secondly you have to make a decision if you like this guy more than your boyfriend, as if you do you should end things with him regardless as it is not fair to him otherwise.