and oh man, has this new lady hit the jackpot. makeup artist mezhgan hussainy and mr. simon have been in the land of love ever since their start – so much so that simon even popped the question! yup, they’re engaged. awkward much for ex-gf seymour? (they dated for 6 years!)

the future mrs. cowell celebrated her 37th birthday this past week, and no expense was spared. simon has reportedly purchased his lady love a luxury 1954 jaguar convertible priced at over $120,000! and that ain’t it…

“red roses, french lingerie, prada bags, you name it. he gives her something new practically every day. one particularly sweet surprise was private his-and-hers swedish massages in their london hotel room.”

sure, when you make $75 million A YEAR! congratulations mezhgan, you scored big time! see below for some preciousness from the lovebirds – especially simon! – on the tonight show with jay leno.