IPhone alarm while on phone

So I'm currently in a long distance relationship and every night we leave the phone connected while we sleep if one of us can't Skype that night and tonight he couldn't Skype and I have to let up early in the morning and I was wondering if I set an alarm in my phone and it goes off can will he be able to hear it also? I'm just wondering because don't want to wake him up at 3:30am.

Then pick another source to wake you up.