IF he is gay he may be reluctant to come to terms with it, especially fearing total rejection from his very religious family.
When you raise the subject again, just be certain, before you say anything else, to let him know that you will never stop caring for him no matter what.
Even if he does turn out to be gay or questioning his orientation, it doesn’t mean that you necessarily need to cut him out of your life. You can still remain emotionally close as best friends. It just means that it will not end up as a sexual relationship. And you do have the right to know this so that you can move on to find the right romantic and sexual partner for yourself. But you don’t have to throw the last four years totally out the window.
There are many many real life “Will and Grace” situations between men and women who had been dating each other in their school years. It isn’t just a sitcom. It is based upon the real life history of the series creator (a gay man) and the woman with whom he has been best friends since their school days.
They are both in rewarding sexual relationships with others but still remain unique and close lifelong friends.
Just realize that because of his family’s strong religious views, it may be more difficult than average for him to come to terms with this.
He may be lying more to himself than even to you because he fears the consequences of coming out.
You need to let him know that he can trust you to NEVER betray his confiding in you or he has little incentive to open up. You may just want to begin the conversation by asking if he has ever considered the possibility that he maybe MIGHT BE gay rather than he definitely is.
But, I prefaced all of what I just said by the very large use of IF and I did that for a reason.
You really need to keep the possibility in your mind that it may not be the case that he’s gay. None of us here can possibly know one way or another The word IF is very crucial here.
IF he’s lying to you about it, it’s not being done to hurt you. He may just be totally scared of the consequences.
Or he may just not be ready to jump into sex of any kind with anyone yet.
But you do have a right to have another conversation so that you can get clarity on where you stand.
Just try to approach it in a less black and white/either or type of way. He may be somewhere in between at this point in time.
Sexual orientation can be much more confusing and frightening for some people than others. For you it isn’t but for him it might very well be.