Rough spot?

My partner (F27) and I (M27) have been struggling with sexual intimacy for roughly two years. We have been together for 5 years. Currently going through the motions and failing to move past feelings of hurt and frustration. Our relationship is great in all aspects aside from sexual intimacy.

We have openly discussed the issue and have come to the conclusion that she has very little interest in having sex. For context, we have sex roughly once every 2 months. I am the only one who would attempts to initiate sex. In moments on rejection, I find I struggle to accept the rejection (perhaps as I’m tired of my needs not being met) and I feel my actions and comments contribute to my partners outlook on our sexual tension. I feel this is overall damaging, and I understand that, I just find it difficult to accomodate to the rejection when I’m hurting too. My partner has told me that although she doesn’t feel like having sex, she will happily give head to intimately connect with me. Although this is a welcomed compromise, It’s beginning to fall short of intimately connecting with each other.

Sometimes I get fixated on the possibility of having sex on a particular day that when it doesn’t happen, I find myself disappointed, hurt, and horny. I feel that in this moment (as I write this post) I’m the idiot for thinking that it might actually happen. This is after a great day spent together, where we’re both feeling connected and emotionally intimate.

My partner has started seeing a sex therapist. (Three sessions so far) I’m certain that this will shed some light on our situation. Im not sure whether its right or me to ask her how the session went or what was said in the session? As a partner I’m more than interested to know but im not sure whether it’s supportive for me to know the ins and outs of the sessions? So far my partner has told me about the sessions and I feel genuinely supportive and considerate to all that is said.

Honestly, I’m fearful that if we don’t reach a solution it will be the end of the relationship. I hate to say it, but I can feel myself harbouring feelings of resent towards the person I love most in the world, and it’s emotionally exhausting. My partner acknowledges that she has the intimacy problem, and understands how it feels not having my needs met, but I can’t help feeling that I’m the ultimate selfish bad guy fr having unmet sexual expectations.

This is my first post to reddit, after reading some comments on dead bedroom I felt this safe space to post! Hopefully I’ve posted this within the bounds of reddit etiquette lol.