Told my partner he often forgets to pleasure me...

I love my partner, deeply. He is the only one for me and I truly cherish our intimate moments and everything that is a part of them.

I have a MUCH higher sex drive than he does, and it has been an issue we have been talking about many times because I end up feeling spurned when he's not in the mood. When he is in the mood though he is AMAZING, and he can touch me in ways that drive me crazy...

The problem is, he tends to "forget" about that part, especially when I get excited and start reciprocating and touching him. The times we have together feel really really nice, but very often he comes and I don't, mostly because he stops touching me when I start reciprocating. I often end up masturbating alone because I don't come during sex. I have been noticing that it makes me resentful, which is unfair because I don't really communicate about that, it seems so delicate...

Tonight I finally tried to tell him and he was really shocked and hurt. He asked how long this has been happening for and I didn't dare telling him how frequently it happens... Now he's really hurt and said he needs time to be alone, and I feel like I should have never told him. Does anyone have any advice on how to communicate about touchy subjects without hurting your partner?