idk where to begin but basically me and my SO have a mutual friend. they like him more than I do but that I'm cool with that.

what I'm not Soo cool with is howuch they talk. I have no probblm saying I'm deffinatly on the nedier side of the scale but I do t think I'm controlling or anything. I just like to chat. what really set me off is that he's now best friends with her on SC and she will reply just to him and not me even tho I've sent her stuff hours ago........I get if you think I'm going crazzy but am I over reacting to it? I just kinda feel I'm being taken for granted and I'm just kinda there learning almost.