No sex relationship

Hi everyone, I'm looking for advice on what to do about my situation. I'm a 19 year old girl and I'm in a relationship with a 22 year old guy.

My boyfriend and I live together and have been together for just over a year now, and for the last 8 months, we've been having less and less sex.

We used to have lots of sex in the day and night. We used to be like sneaky teens and plan to sneak out the lounge in a non suspicious way so his parents wouldn't know what we were about to do. He used to be all over me and just one look at my naked body would make him want to touch me all over but his lust for me has just grown less and less, we haven't had sex for over a month.

I am very sex conscious and things like this concern me because my previous relationship was a toxic one and it was purely sexual so I feel strongly about making my man happy.

I'm always initiating sex and dressing in sexy outfits (which apparently does nothing for him) I put my ass like right in front of him which always used to work, I'm always the one trying to get him in the mood and for some reason he has no desire to be sexual at all. I've tried leaving him to decide when we have sex and I've stopped "asking" with the thought that it might have been me putting too much pressure on him but that hasn't worked. I've spoken to him and told him that sex is important for me, we then agreed to have sex at least once a week, buuttttt I need to make an appointment atleast 24hrs in advanced and to me, that's not how sex should be, it should be out of lust and desired for one another, very spontaneous and passionate. But out of respect for his decision to do it like that I was making appointments but oh my god was it a turn off for me, I mean how can a woman feel sexy if you are the one making an appointment to have sex and most of the time he'd completely disregard the appointment!!

So I've been leaving it.. and of course I give him the occasional blowjob and handjob to keep him happy and then I stopped thinking he'd be so horny that he'd have to have sex with me but I was wrong..

So today, even though I know it was wrong so don't come at me, I went through his phone and looked at his search history. Porn everywhere, he had searched almost every 2nd to 3rd day and i found pictures of boobs and just everything you can think of, my heart is crushed, I'm honestly so hurt, I don't mind porn ok, i understand a man has needs, I mean I watch porn but to not have sex at all or even touch me but then to watch porn all the time, that's not right. Now I've seen screenshots of his porn before and I have spoken to him and he said he only did it because sometimes he just feels like sorting it out on his own so it's quick but I just don't get it. He's told me I'm good at pleasing him, he loves my handjobs but am I not good at sex? What do I do because I've spoken to him about this situation and I feel like I'm pushing him away and that I might be putting too much pressure on him with this. I feel like I have nothing left to do but to bring in a neutral parth to mediate. Please help me.