I'm as gay as pink ink, but the few times I've been with women I've been able to get hard and fuck. When I was in my early thirties (about the age you are now) I even had an affair with a woman that lasted about six months. She knew I was gay and was totally cool about it. And it was very much an open relationship. As I was fond of saying at the time and ever since, she's fucking other men and so am I.

In any event, she and I had quite a few MMF threeways, many with men who were very reluctant to be in bed with another man even with a woman present. But once we got started, they all rolled with it, most of them French kissing and sucking cock like champs. We never did double penetration so I cannot give you any advice there. The closest we came to that was when the lady had one dick in her pussy and another in her mouth.

So, yeah, go for it.