My SIL and I were close once, and then we grew distant because I got pregnant before her. I’ve tried sitting and talking it through with her, to no avail in the long run. This year she has ignored me when I’m in the room and made it a point to exclude me in things. But on the other hand she will share on social media “I love having sisters!” (Referring to me and another SIL). She will be nice to me on occasion, but it tends to only happen when she’s needing something from me or when she feels obligated to spend time with me... after she gets what she needs she will go back to giving me the cold shoulder and talking bad about me to others.

Would this be considered being “two-faced”? Because I don’t know how else to call it, other than disingenuous or insincere.