Oh no, OP! No, no, no. I just read through this thread for the first time now, and was thinking people here were not very nice to you. What happened during those 5 minutes of breaking up? What did he do/say? He might very well be into you but isn't the sort to fight for it. Maybe he finds that undignified, even though he misses you. I think you should have a little talk with him.
I don't think people have to be perfect automatons in order to create a great relationship ongoing (that takes work, finagling, negotiation, communication, and... great sex). What's wrong with learning about each other and growing together, and working through differing perspectives? Assuming things are generally pretty great together, it's worth the effort. Why should he have to read your mind in order to be good enough? There are ways to work these differences out along the way. Ways to gently find out what he would like from a longterm partner. How does he feel about romantic love in general. This keeps it disconnected enough that it can be safer to talk about without feeling like you're pushing him against a wall and asking him to commit to you for life, after 4 months. You should be able to speak about what's going on with you. Maybe obliquely at first, but still getting the message across. My partner, who is perfect, and I have to work things out along the way. Simply because we have different perspectives and operate differently. I don't have enough info to know if your partner is perfect for you, but I see potential from things you said. Of course, if he's not willing to see the potential between you two and see what he can do to create a mutually enjoyable thing with you, that's different. I'm assuming he wants love just as much as you do, and is just as into you, but he comes from a different way of seeing things. Perhaps he needs you in his life to show him a different picture of love, so he stretches as a person. This is what my partner says of me a lot - he loves that I nudge him out of his comfort zone and get him to see alternative views to things, even if his mind isn't always changed.
I also didn't realize the 5 languages of love was a book - my partner and I learned them in counseling. They are gifts, quality time, words of affirmation, acts of service, and physical touch. We all need at least one of these. I like all five, but gifts rate lowest for me. Usually, our "languages", or ways we receive love, are different from our partners. It's important to offer love in ways our partners can receive it, not in the ways that matter most to us.
Just because it's not his natural way to express love (or "care/appreciation" if he's not ready for love) doesn't mean this relationship couldn't work.
Know this: you are not needy or insecure because you need to hear loving praise. We need what we need. He can work on it (if willing) and you can help him with that. I liked how you said earlier that the affirmations are ways you learn about your partner: what they do and don't like about you. That's a good way to frame it with him, to help him understand why you need it, and that it makes you feel really good to know why you're appreciated. Tell him that's something you need. Find out, of the five things, what rates highest for him.
See what happens!