Legally legal

I need advice everyone. I'm 18 and I've been talking to this guy who is 31 he really wants to see me and has offered to cook for me at his house but I'm just so nervous because of the age gap. I've hooked up with guys before but I am still a virgin. I just don't want to be forced into anything. Advice ?!

Update: Thanks for all your comments I appreciate the advice. I have decided not to go and will probably block his number as I have a really bad feeling about the whole ordeal. However I'm nervous I might see him again...but we'll see.