Can sickness cure a relationship?

Terrane
Recently I found out that it's a 98% chance I may have cancer 😔. Before I found out me and my s/o was not doing good at all . We stayed mad at each other for everything, Since when found out about it he's been pretending like we've been good but it's to the point where I feel like if we wasn't doing good don't try to switch it up now because I'm sick .... How do you feel ? Am I being ungrateful, rude , mean , selfish?