If you are using any medication still i wouldn't reccommend a tanning bed. Most acne medication oral or topical have warnings against sun exposure.
Have you heard of Micro-dermabrsion? You can get professional treatments and there are also several "at-home" kits. My girlfriend did the professional treatments (one a month) and now she has NO scars! (It's expensive but worth it) I have used the at-home treatments which make my skin much more smooth and even toned. I would recommend the Neutregena At Home Solutions Kit. $30 at Wal-mart/Drug Stores. The first few times I used it I TOTALLY noticed a difference. I'm going to get professional mico-derm but I can't afford it yet.
To answer your specific question:
I would never not date a guy because he used a self tanner. Any girl that would screen you out as a potentail partner because of that is vain and bitchy and you should screen her out of girls you are willing to date
It's not weird that you want to hide your scarring and guys have a much more difficult time because you don't have the option of make-up. I would do what-ever makes YOU feel the best. Self confidence is the most attrative traint in people. So do what makes you feel good