My boyfriend is 35 and has an inoperable benign tumor on his pituitary gland that causes low T. He takes supplements (I'm not sure of the name of the medication). He won't share much with me as to how this effects him but his friends have told me that he has said in the past that his drive and mood swings are often effected by the Low T or the medication.

We have been together nearly a year and for the first 5 months his drive was very high (he couldn't keep his hands off of me) so I really didn't think he was effected very much at all and then almost like a flip of a switch his drive went to zero. He hasn't initiated in months and when I initiate he seems not very interested. He has inferred that it is because of the low T but won't elaborate much.

My question is, is it possible for someone with low T to have a high drive at the start of a relationship and then have it drop off? I keep blaming myself feeling like he has just grown bored with me but if it's truly related to his condition I don't want to continually bring it up. He has said he is 100% satisfied with me and the relationship and has no complaints. Can anyone explain whether they have had similar issues? I want to better understand.