<human>: Can you succinctly summarize the text in 1-3 sentences?

I can't tell if I'm being hypervigilant or not, so I'm asking for your opinions. 

I (F23) started dating my boyfriend (M29) exclusively about a month ago. We met at a networking event at my alma mater and immediately clicked. At this event, he filled me in with several details about his life. Currently he is a PhD student at my Alma Mater studying Psychology. He stated that he was 26 years old and that he graduated from Notre Dame. 

Shortly after our initial meeting, we started dating. On several of these dates he talked at length about his experiences at Notre Dame and what was currently going on with their football team. I've met some Notre Dame super fans before so I really didn't care that he would talk for several hours about the University. In fact, I have several friends from High School that became super fans while attending the school. 

I recently ran into one of these Super Fan friends in my home town and I asked her if she had known my boyfriend. They were both the same age and received bachelors in Psychology. My friend stated that she hadn't heard of him before and asked me to show a photo of him. I didn't have one so she looked him up on facebook (I don't have an account) and she said she didn't recognize him. On one of his profile photos he was wearing a Nemo University (Name removed) sweatshirt. For whatever reason, I found this odd because he was such a big Fighting Irish Fan. So we googled him and found his academic resume  on my Universities website which stated that he graduated from Nemo University. It also stated that he worked for several years at a government nonprofit, so he which meant that he has to be at least 29. 

I haven't seen him since this incidence. I'm not sure how to approach it. I feel guilty for snooping but also annoyed because he clearly lied to me. 

Should this be a deal breaker? 

Should I ask him about it? How should I approach the issue? 

Should I just walk away from the relationship considering how new it is?
<bot>: Boyfriend lied his age and attending Notre Dame which he bragged about extensively. He doesn't know that I found out he lied.