I don't share...ever...MINE.
I have been dating my boyfriend for 10 months now. I have been his first for everything, and now he wants an open relationship so he can have more experience. Should I allow it?
I wouldn't, it defeats the whole idea of being in a relationship i.e. intimacy. Plus it doesn't matter if you allow it or not, as it sounds like he has already made his choice just by suggesting the idea.
He's already in an open relationship with you and others. Use protection.
That's completely up to you. How do you feel about this issue? There are plenty of people who do this and it works for them, but you have to find out for yourself. We can't tell you.
I know it works for T-Pain and his wife (they both bring in outside people that they enjoy together). Maybe that could be a condition for you if you agree--that it has to be someone that both of you choose and they are only around when you two are naughty.
I also know it doesn't work for just as many people. It wouldn't for me and my dude would be out the door if he said something like that.