Guys, this won't be a harem novel. I'll let you all vote on who MC gets with, and I'll take it into mind with my final decision.
-Jean Grey
-Wanda Maximoff
-Ororo Munroe
-Natasha Romanoff
-Gwen Stacy
-Susan Storm
-Other
Also, a lot of people misunderstand some of these interactions. No one has fallen in love with anyone yet. Emma did mention they were siblings, so they won't be a thing. Xu Xialing is like a sister, so they won't be a thing. Ororo only looks forward to seeing him because of his fun magic, Jean felt the cosmic energy from him, and Xu Xialing is just worried Jack will replace her with another sister. Just because a woman appears and likes to talk to Jack doesn't mean he'll fuck them.