Once you have boundaries in place, what is and what isn't acceptable to you, you can enforce them in a "warm" manner, don't be too harsh or businesslike about it, but still insist on that boundary regardless.
Not sure what the cell phone thing is about. She is more than capable of having her own cellphone and having the bill delivered to her. Maybe she wants to keep you open as an option and wants to keep an eye on who you are talking to in case she sees signs you are moving on? I am tempted to say let her pay for it if she wants. Any reason he shouldn't let her invest her money in him PDT?
Spellfire aka Mike
"Women do not like controlling men. They respect and are attracted to men who control themselves. They ultimately are repelled by men who allow themselves to be controlled." -S&A