I've looked into Wellbutrin also. But am not using it. I prefer a different cocktail of chill pills. I just think it was too expensive for me.
The sex drive issue and ADs can be a big one. I know my H resented me going on ADs after I stopped nursing my youngest and sometimes I feel that he thinks less of me for being on them. He doesn't have a family history of depression and really cannot relate to how it feels (for that matter, I couldn't either until it hit). So stay in touch w/ your PCP about the sexual side effects. I've been taking a second prescrip to offset the libido effect of my main pill. Good luck. Don't be afraid to tell your doc it doesn't feel right. This is a touchy subject in all marriages, much less those that are wobbly anyway.
Also.. don't know how long it takes Wellbutrin to start working- some scrips start as early as 2 weeks, some take 6-8. So be aware of that and don't look for immediate gratification if it isn't realistic.