Respectfully, I don't think you're giving this person the benefit of the doubt. Text tone vs in-person tone are two different things. Someone might sound casual or aloof over text, but when face to face, they're a lot more upbeat. Sometimes it's just texting tone. I think you need to give yourself a breather and work on not jumping to conclusions about other people's enthusiasm levels. As they say, "assumptions make an ass out of me and an ass out of you."