This can be the case but it’s because they didn’t care that much about you anyways. Aquarius is good at showing love to others without feeling it, so when something arises that they do not feel strongly toward, they go with the flow (air sign + water bearer)
I think Aquarius make great friends until it’s time to prove their loyalty. As long as you never really need them to stand up for you, defend you, choose you, protect you, go against the crowd for you then yes! You’ll have an amazing long lasting friendship. But if you value honesty, truth, devotion, transparency, vulnerability, integrity and loyalty, meh. That’s not their strong suit. There are better matching signs for you if that’s what you’re searching for in particular.