I don't know...pillars they may be but...
Scott has slept with Jean and with Emma before. And although this is the first time in 616 canon that Jean has slept with Logan...we all know of their long-standing mutual attraction.
Rogue and Gambit. Kate and Piotr. Storm and Forge. Warren and Betsy. While the romances were the melodramatic centrepieces of Claremont's (and some others) X-Men, it really does not read as important compared to everything else that's going on during this run, so far.
Sinister has the right of it, I think. It's a titillating bit of gossip, not the front-page news.