Is this wrong? Gay Relationship Advice

I mean really and truly in this situation everyones reaction would be different. Some may not care as much, and think okay yeah this is the same as going on safari and watching 18+ content, or some may care just as much as you. I would never say ur feelings are invalid cause they are not but I would never say for you to overthink it to the extent of him cheating because it is quite natural for people to engage in 18+ content in a relationship. I would also argue that maybe try not to discuss this with him as it seems very controlling especially logging into his accounts to see this, and yes suspicions may have been correct but it still by no means accept the invasion of privacy you did.
If it really is serious though and you think about it a lot try and think of other factors that made him create this twitter. Like is he just a naturally kinky person and likes to do a lot of self care… it is very natural mind you. I’m not defending his actions by no means because commenting is a bit weird imo but maybe it could be brought up in other ways like discussing ur sexual life or kinks even doing the bdsm test can stimulate that lol. Anyways try to be have more peace at mind with especially since you have been in a relationship for a long time and quite obviously have built this connection.