Asexual meaning not into sexual activities but the person could be into other romantic type of activities. I don’t really know that much about the topic but I think other sexual activities may be similar between straight/gay men except gender is different. I think what she wants to feel is what all women would want to feel. She did the right thing by divorcing him and moving on. I’m sure she will come find someone better suited to her. There is no way to 100% knw if he is gay other than catching him red handed. He sounds very careful so I don’t think that would happen. If he does not get married again it may be a sign.