Divorce not yet final but Kelsey Grammar, 55, has impregnated a flight attendant,29

Kelsey Grammar. Wow. This guy is….not even sure what the word is. He is not yet divorced from wife Camille (who is soon to be on the Real Housewives of Beverly Hills) and now the 55 year old has pregged up a British flight attendant in her twenties.
Reuters:

Hollywood Reporter) – “Frasier” star Kelsey Grammer’snew girlfriend Kayte Walsh, a British flight attendant, is pregnant, according to an interview with the woman’s father published in The Daily Mail newspaper.
It is unclear how 55-year-old Grammer met the 29-year-old Virgin Atlantic employee. Grammer filed for a divorce from his third wife a few weeks ago.

So, what does this mean exactly? Is this a new relationship? Or was there cheating going on while he was still cohabitating with Camille? This will be his fifth child, btw. Wow. Why don’t more celebrity men utilize prophylactics?