My day at Valley Forge

I had off of work today. I decided after straightening up the apartment that I could not spend my day off confined to a stuffy apartment when it was such a beautiful day outside. I arrived at valley forge around noon and had a lovely afternoon of bible study, journaling and reflection. I began reading a book that I picked up on Saturday at the book sale called Catholic and Christian, so I could better understand the Catholic doctrine. I didn't get very far in the book when I had to pee. When I returned to my blanket, I was approached by this guy and his pit bull dog. Becca, this was around the time that you called me. He asked me if I was planning on staying around for a while and if it would be ok if he left his stuff with me while he took his dog for a jog, fearing someone might walk off with his stuff. I didn't think twice about it. He introduced his dog, Sam, and himself as Barry, and asked me my name, and he plopped his cell phone, car keys, bottle of water, cigarettes, and wallet on my blanket and then jolted off in a fast sprint. I figured he would be gone for about 10 minutes at least so I resumed reading. He wasn't gone very long at all when he returned panting and out of breath more so then his dog. So I let him catch his breath and regain his composure, not really expecting him to stay much longer, but now come to think of it I think he might of had the whole senario planned to get to know me, because he didn't leave. He stayed and talked to me for a long while. I think it was about an hour and a half. I didn't see anything wrong with it, we just talked about surfacy stuff. I found out he is a new Christian. He cusses like a sailor, but brought up the aspect of church to me. I know he is a very new christian because there was a lot of basic stuff that I asked him that he didn't know what I was talking about, like if his church was traditional or contempory.
I talked with him, keeping myself at a cautious distance. Then I did something potentially stupid. He asked me for my phone number. He phrased it in such a way that he liked talking to me and wasn't trying to get with me but maybe we could walk the dog together or read the bible together or something. I said to him I don't see why not. He could ascertain that there is a guy of some sort in my life because of the context of my conversation with Becca. I didn't say anything to you Becca, because you called before we really started up a conversation. He is not someone I would ever consider dating. If I date anyone I know, it would be Brian, I mean we already are in some respect, but it's very casual I suppose. I still don't understand what is going on, and we can talk about it until we are blue in the face and I still don't know the dynamics of our relationship. So since, I am not offically his, I guess I didn't see anything wrong with talking to this new guy. I mean he's not even competition Brian would need to worry about. But I did want to tell him what happened, so I called him but he wasn't home.
So what do you think? Would I be wrong for allowing a new "friendship" to develop with someone who is more than likely interested in me in some respect, when I have already gotten involved in something with another guy regardless of the fact that he is holding back on me, (and seemingly for the right reasons?)