with a sudden fierceness , he lifted her off him and turned her again , only this time he thrust his cock hard into her ass , collaring her , bringing her back against him and holding her still , making her suffer the ecstatic torment of shooting up the roller coaster again , taking as long as it needed , his hand coming forward to sink three fingers into her pussy as her heels hooked the outside of his knees , keeping herself open , wanting to take him deep .