<human>: Summarize the given text in a few sentences.

So my boyfriend [23] of about a year and I broke up about 2 weeks ago. We are still friends, talking regularly. We have even kissed each other goodbye last weekend at a party. I love this guy. Like he could be the one. But we broke up under the guise of we needed to take a step back and work on ourselves before we could be happy with each other.

Now, I got asked to go have a few drinks with a fairly new friend who almost has the same circle of friends, but not quite. I agreed to go because, well, I need to have a good time now and then and get my mind of the ex so I'm not up his ass all the time. This guy and I are going out tomorrow. It could go poorly and this won't even be an issue, but I don't think that will be the case. 

Here is my problem. Saturday, ex and I will both be at a show in which a mutual best friend of ours will be playing a show. Guy I'm going out with tomorrow will also be in attendance. If things go well with guy, I don't know how to be around the ex, or the guy. In the end, I really really want things to work out with ex, but other guy seems cool so I'd like to grab some drinks. I don't know how this casual dating thing works. I have been in a mostly serious relationship since I was about 16.
<bot>: Casual date and ex whom I still dearly love and want to be with and I will all be in the same place on Saturday. Whats the protocol here?