Co-worker weighs the wisdom of being a side piece

DEAR ABBY: I met this guy at work. He was everything I’m looking for in a guy. During a lunch walk, he told me about his breakup with his ex and how he moved out and bought a house. He lives with his son and his nephews and their family. The entire two months we dated were amazing. There may have been a couple of red flags my co-worker and friends noticed. He couldn’t message me often after work or on weekends, and he was always so busy with his kid we couldn’t go on a date. He told me his ex was not in the picture, which I thought was odd since his son is only 2.