I’ve (33M) been dating my girlfriend(33F) for a little over a year. Before we met she dated someone casually for about six months, who works at a pizza place around the corner from her home. She told me the story early on in our relationship, and that things didn’t end well between them. I didn’t think too much of it, just figured it was another past relationship. Anyway, last week she told me she was driving home and the guy was coming out of his work place; they saw each other and waved. She told me about it that evening when I saw her, saying it was a funny and awkward encounter. Later that evening he texted her; she didn’t respond, and then he texted again the next day. They exchanged a few messages; She told me he started being inquisitive; asking about her schedule/if she still lives in the area. She eventually told him that she was seeing somebody and that she wishes him well. My girlfriend told me all this which I appreciate, and wasn’t too concerned about it until today....