And if you ever do wind up in a private environment, then remember again that your body is yours. You are in control of it. If you don't want to be touched, make that known. If something starts going farther than you like, past the point where you feel comfortable, then speak up. If you're truly with a friend, they'll appreciate hearing that, and they'll respect your wishes.
Friends are like that.
It's when someone does something against your will that you know they're not really your friend. Don't worry about making them unhappy with you, or be afraid that they'll like you less. And if something happens to you that you think is harassment, assault or rape, then you need to take some action. Tell someone you trust. Then get help.