During the period we were in her words " building the relationship" it is difficult to estimate or say as on every occassion we met I paid.
During the week we spent in Harrogate the amount was approximately £500 ( inc accomodation ) .I say approximately as there were some items e.g. coffee etc that were solely for myself
The simple answer is because of my feelings towards her and my belief that the week would benefit the relationship and also that she told me that she had no spare money other than that which she earned and existed on.
I also believed that we were building a relationship.
At the time of going to Harrogate I believed that she didnt know if she would get expenses.It was only after the relationship ended that I contacted the Apartment owners to ask how payment was made having been told by her friend how it had been paid.