What would've happened if Rosaline loved Romeo back?

Pray tell what could have been of the fair maiden Rosaline and my humble kinsman Romeo. All this tragedy would not have e'er happened. My kinsman Romeo would be happy with his maiden Rosaline. Living with her, here in Verona instead of seeking refuge in Mantua. Our dearest friend Mercutio would still be alive today for Romeo wouldn't have gone to the Capulet ball provoking Tybalt.  The only negative thing 'tis the feud between Montagues and Capulets will still be ongoing. What a difference it would be. Anon my readers.