Fact is that most straight women are wild, raging, fanatical homophobes when it comes to this sort of thing. Sure they love their gay male pets, but like Hell they want any man they date, live with or marry to be even .00001% gay himself.
Which is lame because it’s an absolute fact that 38% of men have some sort of homosexual attraction, usually at a minor level but present nevertheless. In fact, in that sense, homosexual attraction is nearly normal statistically for men, or at least minimal attraction is. What’s abnormal, at least statistically, is high levels of homosexual attraction, strong bisexual attraction, or homosexual orientation in men. So for your man to say, “I am a little bit attracted to other men” is, frankly, almost normal! But no woman will see it that way.
Now thoughts and actions are two different things. But by age 18, 25% of men have had some sort of a homosexual experience, typically in adolescence. A number of others will have a first experience after age 18. The vast majority of men who do this are straight men who are “experimenting” which is so common it is almost ridiculous.
True bisexual men are much less common and gay men are unlikely to be dating a woman. But the number of straight men who have had sex with men one or two or a limited number of times on an experimental basis is very large. Most try it and see it’s not for them and give it up, but some continue on. Quite a few straight men have sex with guys for all sorts of reasons.