London, June 27 : Harry Potter star Rupert Grint has said that it was a "strange" experience to kiss Emma Watson in Harry Potter and the Half-Blood Prince.

"We''''ve known each other for 10 years so it was a bit like kissing my sister," The Telegraph quoted him as telling the Mail.

"We were determined to get it right the first time, but our first try was a disaster because we both felt so self-conscious and we couldn''''t stop laughing," he added.

However, the actor is not too keen on dating anyone off screen.

He said: "I''''ve never been seriously involved with anyone. I''''ve certainly never been in love. I''''ve always preferred to keep things casual.

"It''''s not that I find it hard to meet girls – they do come up and chat me up from time to time. Sometimes I''''m interested, I tend not to go for the prettier ones. I prefer the quirkier types."

Grint, who plays Ron Weasley in the wizard series also mentioned that he is insecure as far as his acting career is concerned, he said: "It''''s always at the back of my mind that acting might come to an end for me when Harry Potter finishes. I don''''t know if I''''m good enough to have a long career,

"I''''ve got a bit of an inferiority complex about my acting. My self-esteem is quite low in that sense." (ANI)