Am I being too needy and immature?

I'm 27m and have been in a relationship with 33m for the past six months.My partner often has trouble having an orgasm when I jerk him off. And sometimes even has trouble making himself orgasm when I am in the room.He gets very close but sometimes just can't get over the edge. I feel like he feels pressured to finish, or that he is too in his head. When this happens I tend to leave the room to give him some privacy. He then usually cums within a few minutesWhen he is nice and relaxed I can get him to cum. The other night I gave him a massage with a "happy ending" and he had an orgasmThe thing is, when I leave the room I just wait for him to finish. When I am waiting for him I feel unwanted, its not nice to not be able to get your partner off. To not be able to finish the job. That wouldn't be so bad, but he calls me to bring him tissue paper to clean himself off afterward, he says nothing else to me and goes and has a shower.I know that he finds me attractive, he has no problem getting, or staying hard.In those moments, wating for him, I feel like a dirty piece of shit, like he got what he needed from me and was done with me.The end of those sexual experiences is me leaving the room. I wish he would come and kiss me or something before he has his shower, even acknowledge me.In those moments I feel unwanted and inept.I love him so much and I know he loves me.I have tried talking to him about it, he says he doesn't see it, that way, that he doesn't want me to feel that way, that he doesn't mean too make me feel that way, that he just "goes with the flow".I know that I am a very romantic person, he is too in a lot of ways.What do you guys think? Do I have an immature view of things? How do I get past this?Thanks.