1: Sounds like everything: a bore (3)
3: Gas makes one put on weight (5)
5: Club with space for some money (3)
6: Excessively sentimental dunderhead in the river (5)
8: Curiously, Maine's not an American state (9)
10: Got excited by unusual tulip (3,2)
12: Rascal and wuss taking week off (3)
13: Big Bird: 'Apologies--getting a late start' (5)
14: In no state to contain a pregnant virgin? (3)