This is the third book in the Housemates series and can be enjoyed on its own--though I HIGHLY recommend the previous two books, as well. 
 Dev is a nerdy, gay virgin away at uni and hating his life in the dorms--mostly due to some seriously homophobic hallmates. He's a physics major and ultra capable with to-do lists, computing, and maths (it's Plymouth, England, folks. "Maths" it is...) but not so competent at people, or relationships. After a disastrous event he confides in a workmate, IT supervisor Reuben from LIKE A LOVER, who helps him let a room in his boyfriend Josh's old house. There he meets Jez and Mac, from HELPING HAND, and Dev finally feels settled. 
 Ewan lives next-door to Dev and they meet by chance on the sidewalk. And then, again, when Ewan opens a package that was misdelivered. A box that contains a rather nice sex toy. Ewan's only a little ashamed at the awkwardness--he's a bit turned on to determine that the doe-eyed boy next door bats for his team. And, well, his attraction turns to alarm when he finds Dev's "shy virgin seeks experience" profile on Grindr. 
 To save Dev from (literally) getting reamed by the creepers, Ewan proposes a partnership; he helps Dev safely gain sexual experience and Dev helps him not fail statistics. 
 Break out the lists and the lube. 
 OMG. Such a fun and soul-affirming read. These guys are so tender and kind, really eager to help the other learn. And still, funny and compassionate. I just loved it from the beginning to the end, except that it ended and I wanted to keep on going...so that part was bollocks. Bollocks aside, and there are plenty of those on the page, their arrangement spans several weeks and involves not just their Friday night "study" sessions, but also some coffee/milkshake dates, and widens to include mid-week cooking lessons for Dev--which double as foreplay. 
 Lookit, the whole series rocks. I'm a goner for these helper-to-lover plots, and Practice Makes Perfect is a bit like Helping Hand, but with a definite Like A Lover quid pro quo. I loved the cameos from the other books' characters and how all of these people interacted naturally. It was so fun to have the typical housemates squabbles and also the knowing looks--because Dev and Ewan collect A LOT of knowing looks from their amused (and not so amused) housemates. 
 I got the book, I read the book--shoving aside other planned reading--because I'm just that excited about this author's work. 
 Looking forward to reading and reviewing Housemates #74, the good lord willing.