^ What he said.
There are different degrees of lies, (ones that are inconsequential to ones that can really effect other people and yourself), but regardless if you are telling a small lie or a big lie, typically people lie to manipulate other people in some form or another to give an advantage to the lier.
You are really just deluding yourself and trying to justify your actions if are trying to make major distinctions between "fudging facts" and lieing. The intention is the same behind both regardless to what degree it is. Especially in regards to dating/relationships starting it off with a lie is really a poor choice as typically when you are looking for a strong long term relationship you want someone you can completely trust and can completely trust you. In your case you could probably get away with it, as long as you don't attempt to cover it up when the person asks what you do, but that being said if are able to see through your ruse they may not like that you were in fact trying to manipulate them from the get go.