Help wanted - what do people think to this.... I met a man about 5/6 months ago and he seemed very keen on me?

and he pursued me quite persistently and I after a period of time started seeing him. He was very busy so we didn't go on loads of dates but just a couple of times over a couple of weeks and we always had a good time and he was affectionate with kisses, holding hands, cuddles etc. He then went away for 6 weeks on business and he returned early to surprise me and it was then that we slept together for the 1st time - a respectful amount of time elapsed I think. But slowly but surely since then he has become less affectionate, we haven't slept together in weeks and this isn't helped by the fact that we haven't seen each other in weeks! I know he's busy as am I but surely at this early stage we should be in the honeymoon period?? I have recently moved to an apartment on my own so we have a place to go whenever we want in total privacy but he's only visited once! And only stayed for an hour, giving me limited affection during this time also. I don't think he likes my cats and dog - is this the biggest problem he thinks we will face as a couple??! I did think this could all be down to cultural differences (i'm Brit, he's Russian) and he's not very experienced in relationships but I'm not sure whether to have it out with him or just end things with the hope of maybe finding someone who is a bit more attentive? I'm 25 and he's 31, please tell me what you think?