The B-Sort for Intimate Relationships is an interactive tool designed to help you sort out thoughts and feelings about an intimate relationship. The site provides free and paid versions of a personalized report to help you interpret the results. Pretty cool if you ask me...of course, she's a colleague of mine...but she never paid me to say that!
Go Ask Alice was one of the first online sources of user-friendly information on health topics. I like their section on relationships which includes questions from hundreds of students over the years.
It's actually maintained by Columbia University and was started to help their students. It's organized under relelvant topics in a "question and answer" format that makes it easy to find what you're looking for. You'll find topics on things you'll immediately find useful (e.g. relationship boosters) to things you might never thought about like, "Roommate masturbates every night"...well, we all have our problems, eh.
And, it's free to submit a question - you don't have to be a student. If they think it's relevant and it hasn't been covered enough, they'll post it. There's also a section on Sexuality.
