Don't know what to think...

So I'm 20 and I'm single. I've been talking to this guy for a little while now and last night he invited me over for dinner and we ended up sleeping together. He's ..... 45. Sex was great 😍 I didn't think it could be that good actually 😏 Anyways I don't know how I feel. I feel trashy. Is that normal? He's been blowing up my phone all day asking to see me again and that he'd like to take me out. I haven't responded. I like him a lot but I'm afraid of everything 😩 Advice... 
Btw he is single. I'm not a home wrecker 😑