Venus entered the sign of the lion on June 13th, beginning a short stay (until July 9th) in the Sun's home sign. Leo brings out the playful, romantic, and dramatic side of the Goddess of Love, although there is also a risk that some folks will get a bit more egocentric (or simply selfish) in matters of relationship and love.
Think of summer rooftop parties, a day at the beach, and a night of theater under the stars, and you have an image of Venus in Leo. Of course, image and reality don't always match, and it helps to be mindful that our expectations sometimes fall short of the ideal when manifesting. At best, Venus in Leo reminds us to have heart in matters of romance.
Venus' first task in Leo is a square to Uranus in Taurus, on the 14th. This aspect is likely to ignite relationship tensions, particularly those that have been building since early June (or back to March, if you can remember that far). Uranus in Taurus is seeking sensual freedom, while Venus in Leo has a more romantic, "how is this going to make me look?" approach. It's a good idea to break out of routines and try something new with Venus squaring Uranus.
Venus goes on to oppose Mars on June 21st, just before the God of War stations to retrograde for ten weeks. Venus/Mars aspects tend to ignite passion, but we'll have to see whether anything catches fire with Mars moving so slowly. As he's in Aquarius, Mars may stick to principle and make arguments, while Venus next to the Moon's north node will be asking him to have a heart.
Another tense aspect is Venus' square to Jupiter on the 25th of June. Venus and Jupiter get along well in any aspect, although with Jupiter in messy Scorpio, Venus may not be thrilled with his willingness to be down and dirty. This aspect can certainly fire up sexual passion, and it has an ability to get us to take a chance on romance. How we'll feel about it on the 26th is an open question.
Make the most of Venus in Leo. Try not to get too bogged down in images of what should be, and enjoy what is. Leo can take things too seriously, but can also be playful and lighthearted. Engage in your passion in relationships, but also channel the energy into creative projects and fun with friends.