should i be jealous?

iv been best friends with this guy for over 2 years now and we always kinda liked each other, and 2 weeks ago he asked me out, and i said yes.
theres this one girl though, who he just met like 3 months ago, at summer school...and they become really good friends. they even slept in the same room, alone. nothing happened, i know that, i trust wat he says, they just fell asleep. they still are good friends, and meet often, and shes really pretty and attractive. a lot more than i am. i know that he likes me a lot, and cares for me, and would never do anything to hurt me...but i cant help but be jealous of this girl. shes in my college, studying the same course as i am. so its kinda hard to see her face everyday, and see at least 5 of her calls on his cell phone everyday......
something in me burns everytime i look at her....

if you have to ask if you're jealous you are

Honestly i get jealous too.. but u know with my guy it's a bit tricky he's weird he wants me not to get jealous n wants to do things that does make me jealous.. i feel like he's effing around with my heart so badly.. but with u.. just be careful about that girl, cuz u never know.

So What With This Girl She Slept Over And Slept On Same Couch Nothing Happened We're Just Good Friends, Don't Worry About It Nothings Probably Gonna Happen Just Don't Hate The Girl Coz Then The Guy Might Get Angry At You And Go Out With The Other Girl Just Be Good Friends With Her