Mia: No! Don't you dare show up there unannounced. The surprise might be on you. Not to sound harsh but if he wanted you there, he would have invited you. You sound really young. If that's the case, you should be out living your own life – not worrying about what he's doing. You had better check yourself.
Steve: That would be worse than going through his cell phone when his back is turned. See if you can wheedle an invite to campus on a special occasion, your birthday perhaps.
Steve: Happy Hour doesn't require energy and it could be a couple of glasses of wine relaxes her too much, so that's a bad time to get revved up. Invite her to a "happy hour" at home. Have her favorite drink ready, her favorite music playing and a bouquet of her favorite flowers.