Really? Whatever conflict of personality is occurring can’t wait to be resolved until after her fight with breast cancer? Absent domestic abuse, which I thoroughly doubt is happening, you can’t stand by her until there’s some sort of landmark development in her fight? That’s pathetic.

Boston Red Sox pitcher John Lackey has filed to divorce his wife, Krista … who is in the middle of battling breast cancer.

Lackey filed on August 30, according to court docs in Texas, claiming “the marriage has become insupportable because of discord or conflict of personalities.” Krista and John got married in November, 2008.

Sources close to the family tell TMZ … Krista underwent a double mastectomy back in March and underwent chemo as recently as June.

The divorce petition says John and Krista had a prenup. It also says Lackey has “separate property” he wants to keep for himself.

Divorcing your cancer-stricken wife over “conflict of personalities”. Classy.