Ugh. Brutal. Need advice on serious subject...please

So lately my girlfriend has been working a lot of late shifts - she stocks for Lowe's - and for the past couple of weeks she has been carpooling with a male co-worker. At first I didn't mind in case she has car trouble or something like that, but it seems they have become a little bit more than friends. You know the scenario, the phone calls that hang up, she starts wearing nice clothes to work and talking about him all the time then abruptly stops leaving an uncomfortable silence.

If im out in the garage, tinkering with my car when she gets home (usually after midnight) he just drops her off and leaves, but if the lights are off in the garage and Im in the house (they think Im sleeping) they sit out in the car for like twenty minutes.

I asked her once what they were doing, and she said "Just talking" ....whatever. So last night I decided to see whats really going on out there. So I leave the garage door open ,and turn off all the lights. About the time she usually gets home,I go out in the garage and wait.. In a few minutes, his car pulls into my driveway,and Im hiding behind my RX8. When his headlights shine through my garage and onto the car, I see something that I just couldn't believe.

The camber is severely wearing my rear tires. Can anyone recommend a good place near Detroit to get an alignment, ASAP??? These tires were expensive!!