Daffidal,
I'm sure you heard this before, but looks aren't everything. Your guy is with you for your personality. If he was only with you for your looks, then i really don't think that you two would have been together for as long as you have. Also, who is to say that you don't want other guys...(not saying that you do) but it works both ways. As far as the shrink goes... if the shrink did say those things, then don't waste your money on him/her. People need to be loved to survive, if you give up then that's like telling a person with a terminal illness to just forget having hope. In the past many "terminal" illness are now considered something of the past because they have been taking care of becasue people didn't give up and becasue they had hope anyway.. so make sure that you continue to not give up.
Also, maybe you could ask your boyfriend to tell you personality traits that he likes about you when he thinks of them, so that your focus isn't on looks as much.
-Audrey