so i (F19) have been struggling with severe depression lately and this has caused me to really lose my sex drive and just not feel up to having sex for a few weeks. my partner (m20) constantly tries to get me to have sex even when he knows I am upset and not feeling like it. For example, one time i was in the middle of a very bad depressive episode, he came over to comfort me, and he just looked at me and asked if we could have sex. He says I should feel guilty for not having sex with him, that sex is an important part of a  relationship, and generally just complains about not having sex every time he sees me. my friends say this is unhealthy, but part of me feels like it is my fault and I owe him sex.