I think this person is saying they are in some sort of 'RELATIONSHIP'.
Then let "this person" make that clear because the wording is so bad that too many inferences can be drawn. Surely it is not hard to write a sentence which communicates that which you want others to understand .... Neil.
I, for one, have little idea what you are saying. I think a little elaboration might help us understand this cryptic query. .... Neil.
This is cruise website not a dating agency!! Whatever next!!
Yes you are the only one if it makes you enjoy your holiday..
You could be 'the only one', but it's probably not likely. If he stays in touch go for it, but don't depend on it. Especially if he is young, gorgeous and knows it! Enjoy the holiday romance/flirtation, but try not to get hurt.