So can this happen because of OCD-Can I get false feelings for someone?not in a romantic way tho.

I believe so

Like I actually am doubting because nobody likes that person,my sister keeps saying that the person is a wrong deal(not like a bully or anything, it's just that if you get near him ,chances are that he will start to flirt with you for no reason, whether he mean it or not).But he actually is nice,I don't know what is happening but I feel 'loved',when I think about him,I just don't know what is happening, It's not that he is bad ,he just is a cocky type.I actually feel like I am safe with him. (Sorry if it's too long,I just wanted to let it all out,you know it was killing me inside)

I guess your talking about a friendship? And it’s good to vent