I am not a jw and have a totally different story to yours, plus im mega old : ))
My lady is a jw and we have been dating for about 6 months with ups and the most deepest of downs, all due to the Watchtower.
Anyway , she has a 20 year old daughter , obviously born into the Jws , who had the similar predicament to yours .
She has been dating a non Jw for little over a year and about 6 months ago had depression and boughts of loneliness too .
The girl went to a psychologist and got help. 1 month ago she stopped going to the meetings and moved out of her mothers home .
The elders were supportive , since she has not disassociated, she told them she just needs time out . Her mother is sad but supportive too .
Maybe its a question of your feelings for this guy, your mums reaction and that of your cong .
Good luck , and if I take this girl as an example, I see a very happy young lady whose self confidence is growing by the day . I hope you can be like her : )