i am too old for this.....

first thank you for opening the post and i hope you could help i have found my self troubled lately but to truly understand my problem you need some background info first.

i am 24 years old and i have never had a girlfriend or sex in my entire life, i am also in my religious country's so called marrying age and the following is a description of my almost non existing sexual life.

when i was 13/14 i had a neighbor younger than me by a couple of months who was probably gay since he used grind against me with an erection and giving me one in the process and said he was joking when i told him to stop.
and that was 10 years ago and in these 10 years i hot puberty and have become a regular user of pornography mainly straight and lesbian though lately(a year ago) shemale and some gay porn

then i begin using video chat websites (a couple months back) and became a little addicted to it at first i was looking for girls (with no girls to be found) then i was looking for guys.....it made feel happy to be complemented for my looks and body for a change whether the complement came from a guy or a girl and i even called one of these guys earlier today wanting to hook up but decided against it in the end the call left me numb and a little sick as if all the adrenaline was spent in my body.

coming to the real problem now i don't know whether i am gay or not and its tearing me inside since i can't get close to any girl because their is this little voice in the back of my head telling me your gay and that it won't work out and i am terrified that i would put someone that i care about and love through this because i couldn't decide what i was before going into the relationship........i am thinking of staying alone forever.

i honestly don't know whether i am gay or not since i ave never been attracted to my male friends or random male strangers in the street but i am attracted to random girls in the street having said that once i sit down for a fapping session and open up the web chat i get excited by the idea of being with a man especially an older man and being bottom at that and its worth noting that some times when i masturbate i tried to rim myself it doesn't feel that good but some times its just in the right place outside my anus and it gives my almost a mechanical respond and i cum without getting hard or exited maybe that means i am gay who knows? well i know i am too old be wondering sexuality aint suppose to be this hard