lol ya'll are crazy
if they giver her permission, then yes its legal...
i grew up in texas, and 6 mos after turning 17, and 5 years of abuse by stepfather and mom not doing anything...my best friend backed his truck up to the house, and i moved out in less than 2 hours...while mom was at work and stepdad was sleeping(he worked overnight)...my mom was fine with it, said she understood...stepdad thought he could call the cops, and they laughed at him, said i was 17 and there was nothing he could do...i lived 20 miles away, and never asked for a dime...
but like they said, be careful, cos theres a good chance she may get kn*cked up, and you'll be footin all 3 of them...realize what ur getting into...if you're really ok with this, i'd make sure your son and his g/f realize that although they live with you, they are now living together, so if it was me, i'd make sure they made a SMALL PORTION of their own way...as in pay something each month...my exes mom did that...if we were going to live there we both had to go to school and work, and if it became a hassle i would have to move back in with my cousin...she agreed to an extent we were "mature enough", but we didnt share a room, and had to sleep in different rooms, and that didnt mean we could sneak in and out while everyone else slept...and we couldnt have the door closed...it worked well, i didnt get pregnant, and when he went to college, he went with almost $5grand that he'd saved that year...and no, i never got pregnant, and he still kept his straight a's and grad'd college
ya i ramble get over it.....