Welcome 🙂 You're definitely not the only virgo here who has leo placements; I good majority of us (mainly the guys) have leo in either a moon position, venus position, or a combination of the both.
I have leo in venus. This placement, like one would think, is a little dramatic. You like love, affection, attention, and you want it all. You may not be heavy on the dramatics, but you do like for all eyes to be on you. Generally you can dote just as much attention on your partner as you want for yourself. If you aren't getting the affection and attention that you crave, you can become a sour kitty and feel yourself straying. Generally, you are fiercely loyal, but that doesn't mean you don't like a little attention from others. You can be vivacious and fun loving. And you enjoy some theatrics in the bedroom.
As for mars, you're probably fiery and energetic. You're probably creative as well.
All in all, you still have virgo traits, but I like to think that extra hint of leo makes you a little more fabulous and outgoing than the typical virgo.
Thats moi too, Venus and Mars in Leo. I suspect your cappy moon would make sure to keep the Leo energy in check since this moon can be overly conscious of image/reputation, whereas the Leo energy is best expressed freely and dramatically, regardless of how others feel about it.
I forgot you mentioned that you had a cap moon. Like Shaks said, that moon is probably going to make you cool and collected, but underneath that exterior is the dramatic leo placements that you have, and I think in the right environments, they will come out and that cool exterior will become lively and charming (not that you probably aren't charming already).
I'm new here. 🙂