It’s not an ad. The entire comic is setting up a pun around the male character feeling like he’s dodged a bullet.

Its mocking overly-expensive weddings. It’s mocking overly-expensive cars/trucks. It’s mocking self-centred people in relationships who are oblivious to their partners’ perspectives. It’s mocking people who have no financial sense and see their wants as needs but are happy to dismiss their partners’ wants as unimportant. It’s mocking car adverts. But mostly, it’s just a silly pun.