Is this Crazy about online dating?

I was with this guy we being dating for a year. yes that was long. we had fun alot i love talking to him, but now werer over but i juss cant get over him we saw each other an we kiss but i still lik him am i crazy for really liking a internet an how can i get him back we being having off an on lik 3 times, but its mostly bc i i heard him cheatig on me which up to this day dont know if its tru, so please hellp an i hop i give enough info bye mwah