Using “lol” is a similar thing I like to do and recommend. It’s basically the same idea as the smiley face and can also be used to lighten the mood. A good “lol” placed in a text message shows a woman you’re making a joke. It’s not literally meant to mean that you’re “laughing out loud,” but it has transformed more into meaning that you’re joking or find something funny. (The same thing could be said for using “haha” as this is interchangeable with “lol.”)
A lot of these one liners are really good for text messages, but you really need to do a lot more than just a one liner to set yourself apart from the rest. Remember, today’s dating world is fiercely competitive and guys are up against a lot of other guys competing for the same girl all because it’s so convenient to get in touch with one another. Online dating is just making the situation even worse, when anyone with a selfie can sign up and get spammed by hundreds of suitors in a few seconds. Keep these in reserve for after you get to know someone. The funnier ones especially: who doesn’t like to laugh?