Guys and compliments…thoughts?

I feel so pathetic to even ask this but I’ve never really met nice men before or had relationships with good men, but I just recently met someone at the gym I go to. I’ll skip all the filler but we essentially workout together now and this man compliments me A LOT. Obviously yes I enjoy it, but the part of me that’s used to bad men is like “no this can’t even be real”. We have a mutual friend who I’ve asked about this guy and he said he is an incredibly nice person. I’ve never really received many compliments from men before so I immediately jump to “they just want something from me”. Now we have talked about other stuff and he asks me all kinds of things about my job, my hobbies, if I’m single, etc. He’s shared the same things with me. It feels weird to even hear nice things from a man whatsoever, so I feel lost for words! Is this normal, like did I actually maybe randomly find a nice man?? Has anyone else never not known what to do or how to react when you’re not used to good men? There’s a lot of implications he actually likes me, and absolutely nothing has come up about sleeping with me. I’m overthinking so bad because I’ve literally never ever met a nice guy before so how do I know it’s not too good to be true? My last relationship I was constantly belittled so I just feel like it’s unbelievable someone nice might have come into my life, sad but true. I am starting to get feelings for this man for sure, and we have a lot of common interests so I’m just trying to figure out if I should let my guard down a little bit.