Hey, Ravenklaw! Welcome to the forums. If I may offer you some unsolicited advice:
Many people post here looking for betas, and most of them are newbies, such as yourself. Few of them find what they're looking for. Betaing for someone is a difficult and time-consuming task, often with no reward. Many users (such as myself) are reluctant to help someone they don't know. Especially when we have no idea what your skill level is.
When I look at your post, I feel excited. Same-sex romance! Erotic but not erotica! That's exactly what
I write. It's nice to see someone with similar tastes. Alas, your post contains multiple typos. Seeing those typos in your post might make people reluctant to offer their help. It suggests that maybe your manuscript has the same issues.
Stick around. There's an area of the forums called Share Your Work, where people post short excerpts for critique.
This link will take you there. The password is vista. I suggest you take the time to critique the work of others... or, if you don't feel comfortable doing that, maybe reading through some of the critiques other people have posted. Seeing other people discuss and improve their work can help a great deal.
Once you reach 50 posts, you can post your own work there. Showing off your work will not only give you an opportunity to improve -- it will show potential beta readers your skill level. If you want to critique others first, I would suggest the Sci-Fi/Fantasy Share-Your-Work area, which is always bustling with traffic. The Romance Share-Your-Work area is a little dusty, though we're always happy to see something new.
I see you posted before about feeling discouraged after your manuscript was rejected. Don't give up! Even now that the novel is finished, there's work ahead. I hope to see you around.