I don't know how long we'll last

I used to feel so sure about you. So confident and so happy. Now I've just been scared. I'm being honest about my fear but you don't seem to be showing much emotion about it. You're there for me and say you feel bad, but I just don't know. I'm starting to be more comfortable around other friends than you. You're my lover, but also my best friend. At least I thought so. I feel like you're truly losing feelings for me but not wanting to tell me so I don't get sad. Or maybe I'm just being insecure. Sometimes I feel you're judging me. Or will judge me. You are judging me always aren't you? I used to know you were the one and only love for me. My soulmate. But now you seem off. You seem distant. I don't know how much longer we'll last. I don't think you even like me much anymore. I guess we won't be growing old together. I don't know anymore. I just don't really feel the love. It feels fake now. And it makes me very very sad.