A Manhattan judge sentenced the ex-Riverdale prep school teacher convicted in February of bedding a 16-year-old student to 2 1/2 years in prison as she lashed into him for the crime. “His child victim came to him needing a shoulder to cry on and instead she got a penis in her mouth and that’s the unfortunate reality,” said Justice Jill Konviser of disgraced MIT grad Richard Hovan. ”That the defendant is a gifted and talented teacher and tutor is clear,” Konviser continued. “While the defendant may have made calculus bearable to the private school set, this case isn’t about math, it’s about rape, sodomy and endangering the welfare of a child.” After a one-month trial, it took jurors four hours to find Hovan, 33, guilty of all nine counts against him for sleeping with the sophomore in 2011. Hovan’s ex-fiancé Marina Bontkowski, 28, tearfully testified at trial in Manhattan Supreme Court that she walked in on the strawberry-blond student straddling the math teacher and reported it to authorities. Both women took the stand against Hovan but defense lawyer Vinoo Varghese insisted they were lying. Varghese asked the judge to sentence Hovan to one year in jail, citing over 25 letters of support for the ex-Riverdale Country School geometry teacher. Prosecutor Shanda Strain lobbied for a much stiffer sentence of 8 years. HEEHEE..... 'STIFFER'