Men With Pierced Nipples Is That Gay How Do I Find Out If My Man Is Gay Or Bi?

How do I find out if my man is gay or bi? - men with pierced nipples is that gay

We've been together for 4 months, and we had incredible sex life. It amazes me that was on the surface, which is a respectable business, but when I slept, I learned of his pierced nipple and is very experimental, since her marriage broke up, it is 6 years (but not the people to the extent ) knowledge
There are about 3 weeks has something changed with him, he seems more distant and gay, I met a friend of mine. He immediately said he thought it might) not met a closet gay (as is its distance with a trip to another town to see friends of his son, who was very ill, (said my friend, it was something when her male friend who goes skiing every year)
This weekend, I asked if he had wathcGay porn, and he told me he had. When I asked him what he thought, he said it was "bizarre". For me, this is the biggest indication that he might be gay or bi, the right of the individual person I know who is rejected by the minds of men, including kissing, let alone have sex.
I feel ashamed, more worrying for me, you hurt to ask if it is not true.
I'm so confused, we had an amzing time in bed on weekends, but I can not delete comments from my gay friend of my head.
Any tips on how to approach this, please?