Long time Chick friend turned benefits?

Ive known his girl, (lets name her Patty) since about middle school, we always understood each other and talked all the time on the phone. She always expressed she liked me romantically even back then, and i turned her down not wanting to ruin a good platonic relationship we had. We hadnt seen each other since the 8th grade. It wasnt until we were in college until we saw each other. By then she still thought i was the skinny short boy, but that was easily put to rest when i visited her house for the first time. And she seemed very pleased with seeing me. I took her out a few times and she always expressed she wanted a relationship with me and didnt. We fooled around abit in her bed once and in my car on a few occasion and i always turned her down for . We never talk for a long time until she calls me to flirt months after our dates. For some reason, i always thought we could be friends and talk like we always did, and we were until she taking my calls or answering my texts.