Sexual functioning is like a health barometer: This is because effective communication amounts to far more than just saying the right thing. If they are struggling and willing to talk to you about it listen without trying to correct them on what they are saying. There is nothing easy about dating someone with depression, but the endless love they give you in return for your patience and support is definitely worthwhile. I feel sad because XYZ happened. Her motivation for school and life tanked.
Sometimes they may simply not be up for socializing at all and need some alone time; try to be respectful of their needs without taking it personally.
27 things you should know before you date someone with depression
Dating can be hard. The chances are that the person you are dating knows that you aren't going to be able to take away their depression and they aren't looking for you to do it. If you are unable to do that, then it's best to walk away before getting in too deep. If you feel that the relationship is starting to turn to an abusive path, then remove yourself before it reaches that point. It will allow you to better understand what he is going through and lead by example if he is resistant to therapy.