Can't see what MC is getting out of this relationship. So far their friendship is her venting about her ups and downs in life, and him just taking it. As soon as he bites back even a little she goes into woe-is-me mode and he's forced to reinforce her self-esteem before she kills herself. For a person who is all about conserving energy when possible, spending time with her seems like the last thing he'd do.
He should get out of this relationship ASAP, and not let her next woe-is-me outburst push him back in, otherwise we might be looking at a psychological thriller disguised as a romcom SoL. Which... I wouldn't be against, to be honest.