I have two girls and a boy, and have many friends with both. This isn't a breed with a strong difference between sexes... Ricky's Popi is right... ask the breeder to help you pick the RIGHT dog for you. I had no strong gender preference for Kodi, my first, and because the people ahead of me on the waiting list wanted girls, and the Kings had a litter of all boys, I got a puppy.
It was love at first sight for both of us, although we also did temperament testing. Kodi loves EVERYBODY, but is especially attached to me. He's not a "lap dog" per se, but is always close by.
Pixel came next, and again, I didn't have a strong preference... although I was slightly leaning toward a girl, just to experience both. Se is TOTALLY attached to my husband, although I am "second best" if he's not around. She's more cautious with strangers, but once she has decided you are a friend, you're a friend for life. She is definitely the most intense of my three.
Panda was a happy mistake... I wasn't even looking for a puppy. I was helping temperament test a litter for a friend, and just fell in love with her tremendously out-going, "look at me" attitude. She is the wild child trouble maker, but also tremendously affectionate. She is the only one who will actively ask to get up in our laps. Not all the time, but she's very insistent when she wants it.
I find all three very sweet and loving, even though they have different personalities. What I've seen, both in my dogs and other people's Havanese is that the girls have a bit more intensity about them, while they boys are just a bit more chill.