I'm pretty sure this is Boucing Bet (aka Soapwort, Saponaria officinalis). But that's supposed to have 5 petals, & this one has 6! I have a shot of the leaves I can upload, if that will help.
Saponaria, also known as soapworts, is a genus of about 20 species of perennial herbs in the Caryophyllaceae, native to southern Europe and southwest Asia. The most familiar species in Europe is the Common Soapwort (S. officinalis), locally simply known as "the Soapwort". They grow to a height of 10-60 cm, with opposite leaves 1-6 cm long. The flowers are produced in tight clusters on the stem, 4-25 mm diameter, with five white, yellow, pink, or...
