I'm pansexual too...i might write you sometime as i don't know anyone else like me in that way personally, kudos!
I have a lot to say, but i'm gonna snuggle with my g/f in a few minutes so...
1. Tell his bitch-ass to wrap it up!
2. Sincerity is the antonym of hypocrisy...learn it
3. Same sex relationships are harder, and it's fair to ask him to take and slow as long as you work on your issues, and maybe set some veto rules in case the other girl turns out a disaster!
4. You're awesome
Be truthful, honest, and loving and it'll work out. GL!
peace and love,