Which do I choose???

I have 2 great girls who I like and love me back. I can't decide which to choose. I have read all the how to guides but they just don't help.
Details about both: very nice, very social, very cute and both are selfless.
Details about GF1. Met at tennis, known for a year, has given flirty comments and admits to loving me
GF2: met at school, known for 4 years, liked for 1.25 years, has given hints and all her friends say that she loves me. Thanks
123412
Ask for extra details in comments if needed