@Ionlydrinkondaysendinginy I think that you are going to do whatever you are going to do. So many of us are expressing real, genuine concern for you, but over and over you try and justify what you want, excuse this man's intentions and thank those (like possibly @girlfriend44) who have not read all the posts, think this is a mere age gap AIBU (it REALLY isn't) and encourage you to go with him.
Either you go to him, he will incapacitate you with drink and have his loveless, disrespectful and purely functional way with you, leaving you abandoned, humiliated and hurt - and possibly pregnant with your friend's half-sibling.
Or, you can be brave. Block him on your 'phone, make a plan for getting through the evening at your own home, by yourself, be goddess-level brave and wake up tomorrow knowing that you've done the right thing and reclaimed some self-respect.
I suspect that you've already made up your mind. And that you will be here again with a thread wondering why he left you abandoned and shamed and lonely when he promised to be nice to you, to look after you, to share a bit of harmless fun and a drink with you - to not tell your friend anything "to protect you". How you now can't look your friend in the eye, or even speak to her anymore "because of what happened between me and her dad". How he's bragged about what he did with you to his mates down the pub. But it's in your power to stop that happening. Only you can do that.
Please don't put yourself in his power. You might not believe it, but you do deserve better. Look after yourself. x