The statements made by Drew's family do not indicate any issue between Holly and Drew. Clint's behavior did not indicate anything being amiss either. If anything his suspicions were calmed becuase he thought the suspect was Drew, rather than being a stranger. There is zero evidence that they were not happy in their relationship, which is interesting because in a lot of other cases all kinds of dirt comes out about the people involved. Likewise it seems Hollys family and his family still are in contact. I can't see Drew doing this and then the families still being all buddy buddy and Holly's family wasting 8 months with fliers and magnets if they knew Drew did it. It just does not make sense that way.
I don't mean ex's don't stalk ex girlfriends, or that abusive or controlling b/fs may not watch to see what their g/f is up to, but since there is no indication of any of that here, that is why I can't see Drew hanging out by the driveway leading to Holly's school. No reason to.
I asked about Holly working and never got an answer. Most kids start to work around 16 or 17 or when they are about done with High School. You would think by her age she would have had some sort of job somewhere.
Removing Drew from the equation to me makes more sense. I do not see him fitting in as a suspect given the few details we do have. And we do know already that morning he was some distance away hunting so I can't see him just instantly packing it up, driving some distance to Holly's house to be there at 7:30, wandering around the yard and garage with Holly for up to half an hour, and then just vanishing (probably to be back where he was supposed to be when the inevitable police check happened).
I really do not know why Clint thought the suspect was Drew except for perhaps the type or color of the camo clothing he wore. Clint already said he heard "stranger voices" outside. So that was obviously not Drew. He didn't say he heard Drew. His physical description does not really match Drew per se. And although the description of the suspect is vague, the full camo part could be interpreted to include a face mask or cover. Giving Clint the benefit of the doubt, I think he got up, was not expecting to see an unknown person, and assumed the suspect (which he seemingly did not pay much attention to in the garage) was Drew. I wonder more why though after the call to his mom when Clint learned it should not be Drew, he did not do more, faster?!?
One of the problems is we don't know much about the days leading up to Holly's disapperance. Yes, from the outside, it does sound like they had a great relationship but as with any young couples sometimes there are lovers quarrels and they do break up. Not saying that's the case here but from the little facts we do know about the flurry of phone calls, it does make one question why there were so many.
I have to disagree with you about BF's stalking their girlfriends. I've known a few of my gf's who had their bf's following them because they suspected them of cheating. Stupid but it happens.
So if we remove Drew from the scenario, it had to be someone who is close in age to Drew, similar features, young voice (per Clint). An ex boyfriend, perhaps? Someone she went to school with? A guy she may have met at a party or elsewhere?
Did Holly work? If so, where? I don't remember.