reset super girl, wonder woman and hawkgirl.
upgrade them back up all the way but dont unlock.
put them in the bordello.
keep going back and watching them having sex with dudes, sometimes lobo will be the one doing it.
once he has banged all 3, the next time you enter the bordello you will get a scene and he will be hireable.
from here on, its a crap shoot, basically, alot of people say you gotta hire him and put him to work in the bordello,
either way, you gotta keep watching him bang the girls alot.
take him out of the bordello, and keep watching to see him there again.
hire, drop him in the bordello, watch scenes, take him out, watch them bang...
nobody knows exactly what triggers the next part. for me it was doing what i described above, after i took him out of the bordello, i went in, and a new scene triggered with them talking about the paying.
after that, a few days later(just go back and exit the bordello), he will show up with crush. then you can re unlock the girls back.
its pretty grindy, and ilogical. you just gotta try it out. all i know is that he gotta bang each of those 3(he bangs 1 per day, and can repeat the same girl).