Ch-ch-check out Obama's AH-Mazing final WHCD speech (above)!
They really wanted to work things out, which makes us even more sad!
And now, multiple sources are confirming that the duo 's "spark was no longer there," even after 18 months of marriage counseling!
"She felt he didn't put enough effort into the relationship. Recently, he wasn't doing any of the things they'd worked on."
Another source revealed after Mike, 33, suffered an NHL career-ending injury in 2012, he lost all ambition to do anything…
Which caused a maJOR source of conflict in his relationship with the Duffster!
Ultimately, Luca's parental units realized they were better as friends, and an amicable split was the answer.
P.S. CLICK HERE to see Hilary and Mike's relationship through the years!
[Image via Instagram.]