I have a friend who helps me with my shopping sometimes. We will go together in her car and she will help carry the bags. I give her petrol money and pay for our food and drinks at the cafe.
She's started buying things on my behalf then wanting me to pay for them. I've not asked for the things she buys. Sometimes they are unwanted but it is the type of food I'll generally get so I'll hand over the money. She enjoys getting bargains and special offers.
She's started picking up my Christmas presents, deciding what I'm getting people and how much I'm spending. I enjoy buying presents and want to spend my own money. I also don't want her getting credit for choosing stuff for people - I feel she makes a big deal to the person receiving the gift so that it almost becomes a present from her and not me.
I really appreciate her help but I'm finding it awkward to stop the unwanted favours. I feel like I'm being ungrateful as she spends a lot of time shopping for me even though I've never asked her to.