So my bf and I were laying on his bed playing halo and I see him Snapchat someone. The thing is he always told me that be never snaps he just has it because his sister sends him pics of his niece through it. So I'm like "how's *sister* doing?" assuming hes snapchatting her and he says "idk good I guess. I haven't talked to her since last week." So I ask him who he snapped then (not in a crazy 'who tf you talking to' way) and he says its this girl he used to hang out with at his last job and I know this girl has liked him for a long time. So then I'm kinda upset because he hasn't even added ME on Snapchat and I didn't think anything of it because he said he only uses it for his sister. We are connected on all other social media, except Snapchat. I told him why I was upset about it and he apologized and added me and then sent me random snaps of everything in the room for the next 2 hours as a joke (bless his heart). I don't feel weird about it anymore and I trust him completely but when I told my friend about it she was like 'wtf that's really shady' so my question is, should I be upset about it? Or am I right just letting it go? Is it shady?