It's Rosacea, a complicated beast. Goes through flares. I have the sub type that includes 'blushing' to things. Mostly I just burn but am not visibly red. Haven't decided yet whether that is lucky or not .
It is treatable with antibiotics, but it's a long term progressive disease and don't want to be on them forever so I am (still) finding a natural approach - with some success. I must admit my once brimming confidence has a few dents in it.
What was your ex's issue?