14 yo stole $

My son just turned 14 a few days ago.

He and I & my roommate/bestfriend we've lived with for two years moved into a new apartment in November. Since the landlady did not give us an address to mail the rent we started to put our rent money into two separate envelopes. We foolishly left them in the pantry on the counter clearly marked RENT. It sat there for a little over a week as our landlady was late to pick it up. On the day she was to come and get it we left it on the dining room table and we both went to work. It was a Saturday. The plan was when my son woke up he would get on the bus in front of the house which would take him to his aunts house that day. When I was at work he asked me if he could bring them our old artificial christmas tree. I said sure if he felt like dragging the box onto the bus. When we got home we noticed the rent envelopes were still on the table & the landlady had not come. Long story short $120 ($60 from each envelope) was missing from the rent. We hadn't counted since we put it in the envelopes over a week earlier. We didn't know how long it had been missing.

There were only 3 possible conclusions; 1) my son took the money, 2) my roommates boyfriend she just got back with took the money  (he was over one day while the rent was out) or 3) a stranger took the money.

What stranger would only take SOME of the money? And how would they get in? That option was scratched off our list of suspects.

My roommate thought it was my son, I thought it was her boyfriend. Instead of fighting we decided we would never know so we would let it go. However, after a few days and my emotions weren't running so high I felt in my gut that it must have been my son. And $120 was a lot of money & if he took it I could not let that go. He has never done anything like that before and is a pretty good kid but I just knew it must have been him. I didn't want to go to my roommate with this info, especially after defending him and listing of all of the reasons why it couldn't have possibly been him, until I got my son to confess. The thing that did it was finding out he took a cab that morning and not a bus. He had no money & I left him with bus fare. He lied about it. He said he took a bus, I checked his phone and found out he called a cab.

Well today after I brought it up again he broke down & confessed that he took the money, a little at a time and that he mostly spent it on Beyblade @@. (A toy he collects) He gave me about $50 in cash and $75 in gift cards he got for Christmas and will pay back the rest. But now the hard part....admitting to my roommate it was him and apologizing for blaming her boyfriend. :/ It seems she let it go and she hasn't mentioned it since so it will really suck bringing it up again.

I need advice on how best to do that and what an appropriate punishment should be!? He has already lost his phone & his cable for other things.