If just XO, then sounds like executive officer. In the Army, that is probably a Second Lieutenant or First Lieutenant just under Captain in a typical Army unit. If it said "hugs and kisses," that's not a good thing. I don't want to spread bad news, but when I was in the Army, a lot of soldiers had sex with different partners. Not me. I was one of the few that didn't partake. A couple female soldiers in my unit had to be discharged for getting pregnant. Not a fond memory I had in the US Military. In my barracks in Germany, apparently they had surveillance cameras and so gossip spread fast when they could actually watch people having sex and/or cheating. It appeared many didn't care if they got someone pregnant or got an STD. My roommate once joked that he had no children/kids (that he knew of). Not good.
One of the perks of the US Military is you get to travel. However, in retrospect, it might be better to stay stationed in the States. From what I saw/heard, the further you are stationed overseas, the more sins will surround you. But I guess many young people are like this, anyway, whether in the Military or Civilian sector. Many people cheat on their spouses or loved ones and try to keep it secret. I find this to be incredibly and reprehensibly unacceptable. But that's just my opinion.