I guess the situation in my mind was asking a girl you already know, possibly as a friend or work/school colleague, to switch to a romantic relationship (confes

I guess the situation in my mind was asking a girl you already know, possibly as a friend or work/school colleague, to switch to a romantic relationship (confessing your love). There is great potential for miscommunication in those situations, as you're trying to change your respective roles. If you just met her, and so your roles are not already established, then sure, text away.