This might be a stupid question but when speaking about yourself do you always use the verb ending in an "o" and when referring to someone else the verb with an "e"? I always thought it depended on your (or the person you're referring to) gender.
For a lot of these (when referring to myself) I drop "eu", 90% of the time it is accepted. However there are frustratingly times taht is not accepted. Is there a rule where certain verbs you need to include "eu" or is it an optional in all cases?