Hardly the same thing, said girlfriend/boyfriend could decide to be single, it makes no financial sense for footballers to pull a move like that. There's been many players in the past that would have died for the shirt but we would have happily thrown under a bus for an upgrade (Cahill), we can't moan when it happens in reverse!!!
Also Hazard played for months with a hip injury, i doubt his commitment would wane even if we are his second best.