I think it's good you are recognising patterns in your behaviour and reading up on attachment issues, understanding your past and how it has impacted on you.

You don't say how long you have been in this current relationship but it's usual for a drop off in constant attention after a period of time (usually a few years) together, this can take some adjustment which it sounds like you may be going through now.

Do you have a 'date night'? It sounds corny but this works well for many people, setting aside a night where the two of you spend time together as a couple, making an effort for each other like you probably did when you first met. As reply above states, suggesting this would make communication clear to him, it would also give you something to look forward to every week.

I also think it's a good idea for you to plan your own things with other people through the week, this also will give you something interesting to talk about when you are together.

I think quiet time spent in each others company can actually be a very content secure stage in a relationship, it can indicate trust and comfort - perhaps this perspective might offset some of the worries you have.