Just so OP doesn't feel completely alone, I'll give the following concessions to my own controlling ways:
DD14 (15 next month) has an 11 p.m. bedtime Sunday-Thursday. If she stays up a little later, or has to get homework done, that's fine.
Curfew on Friday and Saturday - 10 p.m., occasionally (very occasionally) I let her stay out until 10:30 p.m.
She's a high school Freshman and I still ask about projects/homework and inquire how it's going, provide friendly nudging reminders.
Our computer is in the livingroom area. Now DD is an only, so time is not an issue.
I do have DD14's FB password and I do check her page. By what I see going on and the things that are posted, I think more parents should keep an eye on what their kids are doing online. It also keeps DD from posting things like her friends because she's embarassed I'll see it and some of these kids should be. You should hear the things they say. I have not, however, told DD she needs to unfriend anyone. That's up to her. Also, I've seen a number of bullying FB pages and talking about who slept with who, who smokes pot, etc. Things like this, whether true or not, could ruin a lot of futures. I will only concede the FB page when she's probably about 16. I will say I've also seen some very supportive pages on FB, particularly in the wake of the recent rash of suicides, so it's not all bad. I realize they're teens and coming into their own, but I still feel better occasionally checking her page. FWIW, she has my password as well and is allowed to go on my page whenever she wants. I have nothing to hide.
DD has her own cell phone and I have been known, on occasion (much less so recently) to check her texts.
Yeah, yeah, I know.
In the beginning I thought it was key and it opened up a lot of discussions for us. Now I do it VERY rarely and NEVER mention anything I see. Again, it's for DD to decide how to handle certain situations and people and she's been doing a wonderful job.
I know my DD's not an angel and I honestly don't expect her to be, I just like to have some idea of what level she's on and what the newest obstacles are, so I know what discussions might be coming.
Okay, flame suit on (I feel like a superhero when I say that).