I’m going through this exact thing right now, except it’s me with the problems :( it happened out of nowhere and it started right when quarantine did. I used to be the craziest, horniest, ready to do it at all times kinda person and then it just all left me. Sadly, this is still happening to me and I have no idea how to fix it. It really sucks because my boyfriend can’t help but feel like he’s doing something wrong but he’s not.... it’s literally like someone turned a switch off in me and it will not come back on. I wish I could give you advice on how to help him but sadly I have none. All I can say is to be patient with him because if he’s feeling anything like me... he’s terrified and embarrassed.