I have been "maintaining" my lips for years now so it has not kept me from doing things anymore. When I get nervous or anxious my body will respond by sweating and/or making my mouth dry. which in turn make me focus on my lips.Especially if I left my lips alone for 3-4 days. I dont think the cause is mental. An attributing factor might be. I think it's a difficult area to heal.
I wondered many times how I would be able to keep/get a girlfriend with this condition. As with any condition, your partner should be compassionate or accepting. I have had girlfriends with this & I am now married.