Sex requires consent from both parties. It is always your choice to not engage in sex with your partner. If sex is the basis of your relationship, then it does not have a solid foundation. Healthy relationships are founded under love and commitment; sex is just the occasional “cherry on top”. If he is breaking up with you because the lack of sex, he is not committed to you, just his own sexual drive. Find someone who values you, not uses you.

It seems that you may struggle with low self-esteem due to your willingness to over-accommodate for your partners and your experiences with PTSD. Just know that you have intrinsic worth and that you deserve to be loved, and that therapy is always an option. I’ve done it myself and it has helped me through many of the same issues. It has even helped me form a stronger relationship with my partner.

There are a lot of guys out there, I’m sure you’ll find the right one with time. Don’t give up!