I personally don't think you are being unreasonable at all.

I don't believe you are being unreasonable. It's natural when you love someone to be opposed to other people (sometimes even of the same sex) to be that close to the person you care for. While it would certainly be a trust-building opportunity, it could also cause some problems. You have to ask yourself if you are a jealous person. If you can trust him, that is great. But if you are a jealous person, even if you trust him issues may still arrive. No one is perfect, and the thought of someone else's unmentionables laying around the house of your significant other gives the heebie-geebies to even the most trustworthy of partners. I don't think it makes you a bad person, or wrong for being concerned. But you should be honest with your boyfriend in how you feel. It may not be that you do not trust him, or you are jealous. The pure thought may just make you uncomfortable. If you are honest with that, and he doesn't respect your opinion and feelings of being uncomfortable then perhaps he's not the ideal one for you. Relationships are about give and take. Some times you will take more, and he will give more. Other times he may take more, and you will have to give more. Compromise is key.

I told him if the shoe was on the other foot how would he feel and he said he wouldn't think anything of it since he can trust me. I think it's a common reaction in women to feel a bit uncomfortable when her boyfriend is potentially going to have a female roommate. I just feel like a can't win with this. Please Advice!!

tell him he can have a girl roommate if she's 20 years older than him with adult kids and isn't attractive, ha ha. I would be bothered by it too. I mean come on, you want some chick walking around in her towel in the A.M?

I would be uncomfortable in that situation as well.

I don't think that you are being unreasonable. Personally, I would not share a residence with a single woman unless she were a member of my family. He can complain all he wants about your not trusting him, but a living arrangement like that just provides too many opportunities for bad behavior.

Thanks to EVERYONE for responding! I sincerely appreciate it! I'm taking all these in.

I don't think you're being unreasonable. I don't think he would want you being a roommate with a guy! It's not really about trust. Being friends is one thing, living together is something completely different. When you are living in close quarters with someone, it can lead to things. Especially if the other girl is up to no good.