Boyfriend

Lauren • Name is Lauren and Justin has my heart
Should I be mad or suspicious if my boyfriend hangs out with a woman he has been friends with for years. She's married and has 2 kids. They hung out last Thursday till like 2 in the morning. I asked If I could come over and he said after she leaves. I said why don't you want me there while she's there and he said don't act like that I'm just trying to hangout with my friend. I told him I didn't feel comfortable with him being alone with a married woman at 1:00 in the morning he told me yeah who I have been friends with for years. I don't know this woman. He said I can meet her and he didn't hide the fact they were hanging out that night so I think it is just the jealous side of me but I would like yall opinions.