One whose sex life has become so diluted by lack of sex that it is now largely composed of memories of past sexual encounters and is unlikely to contain any actual physical sexual activity.
Since his missus stopped putting out, Bob has been getting so little action he's transformed into a homeosexual
A person who is in homeostasis with their sexuality. In other words, someone who is completely comfortable with their sexuality, whether they be gay, straight, bisexual, asexual, or anything else.
It can be used as a noun or as an adjective.
Male Friend 1 (Referring to peanuts): And then he told me not to touch his nuts.
Male Friend 2: No homo?
Male Friend 1: I'm homeosexual. I don't need to tell you that I'm straight.
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John and Jack were making out in public. They are homeosexuals.
A person who finds romantic urges towards both men and women but only find sexual interests in the same gender. He or she will enjoy going on dates, hugging, cuddling, buying stuff for their other, and possibly kissing, but they can only be aroused in sexual intercourse with the same gender.