I've noticed an interesting phenomenon in Spanish and Italian that when it's te in spanish, it's ti in italian and vice versa, like Spanish Te Amo vs Italian Ti Amo and Spanish A ti vs Italian A te. This is the same for me and mi, a mi in Spanish and a me in italian. The Spanish say me interesa and the Italians m'interessa (from mi interessa) Then also for si and se, the Spanish say como se dice and the Italians say come si dice. The spanish say si for if and the italians se.
It seems like there is a pattern of e and i in Italian and Spanish, like when it's i in spanish it's e in italian and vice versa.
Can someone explain to me this pattern? I'm sure it has to do with how they evolved from latin.
Thank you!