I feel like I can only condone or condemn the relationship, and neither one really sounds like the right thing.We made it to 17 without a bit of trouble, and now I just dont know how to handle it.
YMMV, it doesn't sound like your daughter is heavy into rebellion, but you don't want to get into the whole forbidding/I can do whatever I want! That usually creates a motivation for the child to act just to make a point to the parents.
Also, try to validate her feelings on this - I suspect she finds his "maturity" attractive, let her know that you understand that and admire that she values maturity. I think it would be important to express that you feel finishing school and focusing on college should be a priority.
Trust your daughter's opionions, but talk to her to make sure she knows you're there for her and that she needs to should stay strong. I'd try to find out what this guy's other friends are like. Ditto on I don't think that anything you do or say will change her mind toward him, but will drive her away from you.
You want to make sure that her relationship with him doesn't derail her future college plans.
If it isn't - I don't have any idea what consequences, if any, there might be for parents who don't intervene if they know that sexual activity is going on.
That being said, I vote for making a big huge deal about her lying, and also advocate for a visit to a gynecologist or Planned Parenthood.
A teen can spend six months in a bad relationship to avoid having an awkward conversation explaining it to their mom.
I know it seems impossible, but I think you want to treat the relationship as casually as possible.
So the last few weeks, I notice her texting and talking on the phone to Guy more and more. She and I have discussed sex, safe sex, responsibility and consequences on numerous occasions, and she has confided in me about some of her friends activities; some that she disagrees with.