Maybe homoflexible? Or you could be just lesbian, but heteronormativity may be affecting your feelings.
Yes! You can use polysexual/romantic, or faesexual/romantic, which is more specific.
Maybe faesexual and/or romantic
Maybe femmeromantic? Not sure about the flexible part but if you'rte only attracted to feminine males femmeromantic should fit.
You might be polyromantic/sexual, meaning you experience attraction to 2+ genders, or faunromantic/sexual might be more accurate.
You might be lithosexual, meaning you like the idea of sex but lose interest when feels are returned.
You might be lithosexual. It's on the ace spectrum, and basically means that you experience sexual attraction, but only in theory and might not actually want to have sex if feels are reciprocated. As for the part about the girl, you may be alright having sex with her because it is possible for you to develop romantic feelings towards her.
Based on what you have described, you are most likely omniromantic and ace. I think that what made it confusing was mixing up sensual attraction with sexual attraction. Sensual attraction is the desire to kiss, hug, cuddle, etc, and you can still be ace while experiencing sensual attraction. Hope this helped :)