The female version of BROMANCE.
Two chicks who have a strictly Platonic relationship, but is full of much care and affection.
Boy: "Kelly and Leslie have a very tight Womance."
Girl: "They should go out on a date with Matt and Kevin, because they have a Bromance, it would be so cute to see all four of them together, enjoying their partners and friends!"
Boy: Yeah, Bromance right......Dude Womance's are freaking sexyy!!