Why do men give mixed signals?

iv hooked up with this older guy more than a dozen times now, we stopped for like 6 months.. It gets intense and we usually keep eye contact but It's more like a fuck buddy situation neither of us have even mentioned it's more mutual, like a wam bam thank you mam (and literally I don't know why but we always thank each other when leaving lol) anyway we hooked up again and he complemented me acouple times & said look at me with those pretty --color-- eyes and kept saying he wished we could have a whole night sometime, but like usual if I don't text first I don't here anything from him, does he just say that to keep me wanting more? Like a last option booty call?
Why do men give mixed signals?
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