If he is 20 and he has had 10 relationships and some hookups, his relationships couldn't have been too long and form my experience, people get much more sexual experience (in terms of trying new th...

They are probably overweight and insecure and want to make people feel the same way. You don't have to lose any weight, neither does your friend. Ignore them.

you should see a doctor, I believe there are medical solutions for this. also, do you have a healthy diet? do you smoke weed? I'm asking this because every smoker I've been with lasted a really sh...