Complex sentence: Sandrino grew up into a handsome and kind young man who fell in love with Rica Sison, a Luna officer; they eloped when she got pregnant and fled to Barang's hut.
Split into simpler sentences: Sandrino grew up into a handsome and kind young man. At some point, he fell in love with Rica Sison, a Luna officer; she got pregnant and they lived together in Barang's hut.