Should i be worried?

My boyfriend is 32 and we have been dating for 5 months now and out of curiosity i asked how long is longest relationship was and he said 1year and i asked why which he replied with because he got bored but of course most relationships go out the honeymoon stage, its now making me abit worried incase he gets bored of me any idea on how to stop being paranoid or to try and make it less boring etc