*WARNING*
Never have been in any relationships, simply observing from the sidelines
*WARNING*
I'd talk to her (texting and using the phone is plain wrong in a sincere situation which deserves personal attention) letting her know you prefer being friends as the thought of a breakup is overwhelming (isn't it?) and would destroy what you feel is a great friendship. In all reality, don't lie, bend, or twist the truth. It will
always come back to bite you. Be clear, concise, considerate, and above all, be sincere.
Introduce her to your boyfriend?
Ouch....