Why doesn’t my husband desire me?

To start off, my husband (32 M) and I (27 F) have been married for a little over 2 years. Just 6 months ago we welcomed our baby boy. My husband is my first sexual partner as I am also his first. I honestly don’t even know what a healthy sex life is supposed to look like because this one is the only one that I know. In the beginning of our marriage we’d have sex maybe 2-3x a week. During my pregnancy we barely had sex at all and we went a whole 7 months without having sex. My husband doesn’t ever ask for any hand jobs or blowjobs or ANYTHING. And according to him he doesn’t even mastrubate. Never initiates to just even makeout with me. I dont think im ugly. I workout, im educated, and ive always kept my appearances up. I genuinely just feel so at a loss because I want him so badly. JUST NOW on his birthday weekend I thought tonight he would want to have some intimacy with me but he said “I don’t think I can screw you tonight” . I’m just here crying feeling so rejected while he sleeps next to me. I know my husband loves me and he is a good man. But I want more and I need more. I’ve had the conversations about our intimacy and we even tried therapy but idk what else to do. So I guess I’m asking for advice on how to go about this better.

tl;dr: my husband never expresses desire for me and I don’t know how to deal with this in my marriage as I feel like I’ve tried everything. I feel like there is a huge lack of romance between us and I’m really becoming discouraged.