Ambassador Kimberly Guilfoyle has been seen quite a bit with Christos Marafatsos … and his inclusion at official meetings is raising some eyebrows.

Christos … whom Trump once called a “good-looking guy” … is not an elected or appointed official but a paid lobbyist … the Wall Street Journal reported.

The thing is … as ambassador to Greece, Guilfoyle has reportedly tried encouraging a few foreign governments to ink gas deals with the company Aktor.

And who happens to be a registered lobbyist for the gas conglomerate and has received $160,000 in payments? You guessed it … Christos … this, according to the WSJ.

In addition to attending multiple meetings across several countries with Kimberly … Christos apparently flew her to Bulgaria on a private jet.

Aktor — which secured a $6 billion deal with Albania — told the WSJ that “Guilfoyle wasn’t improperly promoting Aktor’s commercial interests.”