This is an older painting of Krishna with His gopi girlfriends. The gopis love Krishna the most. Our idea of romance is but a mundane perverted imitation of this pure selfless love. They only want to make Krishna happy, but the paradox is that the more they try to please Krishna, the happier they themselves become.
The dearmost of all the Gopis is Radharani, here pictured standing next to Krishna.
The gopis do not get jealous of one another; rather, they encourage one another in loving Krishna because the aim is only to make Krishna happy.