Who cares what you do next!

I like both. And, what about Spanish? You are learning Portuguese. It'll be easy for you to start with Spanish. When you get to learn Spanish, it'll be easy to start with Italian. :)

I'd go with Italian. It can be easy but it also beautiful -- not that French is not beautiful , it is! But I think you might also have a harder time getting the French to be patient with you as you are learning their language. Many Italians love to hear foreigners speak their language and more so than French culture they may be willing to help you improve - thats not all Italians though, depends on where you go within Italy. And that should be your next question. Where do you prefer to travel next, France or Italy? I would base my language making decision on where I want to travel to next. What does your heart tell you?

Whatever you choose is a good choice. It depends on many factors. Why are you learning the language ? Do you need it to serve any purpose in your future life? As for the degree of easiness , Italian would be easier to learn than French after having advanced in learning Portuguese. Notice that you don't really finish learning a language, you just improve it and reach an advanced level and then you start learning it ;)