It was all love at this match.

Lara Trump met her future father-in-law for the first time at the US Open in 2008, the same year she started dating Eric — “and he couldn’t have been nicer to me,” she told The Post.

Her then-new boyfriend, the youngest of Donald and his first wife Ivana’s three children, didn’t give her advance notice that Donald was holding court at the tennis tournament.

“My husband did not prepare me at all,” Trump, 42, said. 3

“I thought, ‘I’m just sitting in the bleachers,’ like the normal seats cause that’s kind of how I grew up. And then we go into a suite and there’s Donald Trump and Melania Trump.”

The patriarch, who grew up in Jamaica Estates, Queens, just five miles away from the USTA Billie Jean King National Tennis Center in Flushing, where the US Ope

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