So, in summary, you got on great with your boyfriend until you told him about your sexual history.
You feel ashamed that you've made love with 36 men.
About your past, it all depends what spin you put on it.
The way I'd put it is that you were sexually adventurous. Nothing wrong with that. Having sex is fun and enjoyable. Good for you. At least you were going out and socialising instead of sitting at home watching Eastenders.
You have served your sexual apprenticeship. You're now ready to move into a steady relationship.
Your boyfriend is putting an old fashioned spin on your past. He's being far too negative over it.
I see it as a big plus point that previously you butterflied from one lad to another before settling down with this one. You now have a much more mature perspective on this than someone that had just stuck with the same boyfriend all that time.
You're STI clear and didn't become a mother - so no lasting harm was done.
If anyone ever calls you ugly again ignore them or just laugh. Your looks are good enough to get you inside the pants of 36 men and to attract your current hunk of a boyfriend! And besides, looks are totally over-rated when it comes to success and contentment in life. Who needs looks when you've got soul? And boy, do you have soul, OP.