You are curious and want to see what's out there - I get that - but a "break" is selfish. Sh!t or get off the pot. You can break up and get back together, but you realistically can't expect him to wait for you to make up your mind while you explore other options without him doing the same.

The guilt of being in a relationship and not knowing what you want is HARD, that's why you're feeling so bad. If you feel even one iota of relief after breaking up with your boyfriend, you'll know you did the right thing.

I met my BF at 21 and we have been through S**t and sunshine. I can tell you from wanting to call it quits more times that I have stretch marks that deep down inside you KNOW what you want to do... you are just scared about the outcome and not sure if you truly want to live with it if it comes to that. Some times the best places the best relationship for you to be in is one with yourself and no one else. Find out who you are, what you want and how you want to be loved.
That's just my 2 cents no matter what (and this is for everyone) I wish you all the luck and love in the world.

I agree get a female roommate so you will not be depending on someone to provide you with a place to live.
Be truthful with your boyfriend about your feelings...doesn't he deserve to know what's going on ? Or should he be kept in the dark till you figure out what's best for you?
I think the least we can be in a relationship is honest and upfront.
Have the hard conversation with the boyfriend if things don't work out ..then they don't ...
Being someone's fall back guy is not fair ...No woman would like to be in that position.
Treat someone the way you would want to be treated ,it's the adult thing to do!
Good Luck, Roo2