How much are you investing in your relationship? Are you investing in your relationship!? Is he?? What do you mean you've got bored of him (implying that you haven't always been bored of him?) - has he changed, have you changed or has life changed? Life with little kids can be quite boring!
DH and I have been married for 15 years and have three youngish primary age kids. None of our parents are local but both sets will happily babysit when we see them (monthly or so). So we go for lunch dates every few weeks, and to gigs a couple of times a year. That's about it for time as a couple out of the house at the moment!
But we eat dinner as a family every night, we tend to chat a lot then. We have a couple of TV programmes we watch together (and others we watch on our own). We do stuff as a family (National Trust type trips a lot) and as pairs/threes/one parent with all of the kids (I take our eldest swimming, he takes the youngest and middle to LEGO club etc.) and completely separately (socialising with different sets of friends, book club, running and so on).
We talk about my degree, or my husband's latest 10k PB, or what our friends are up to, or holiday plans, or the news, or DIY planning. I have learnt most of the rules of rugby and he watches more Strictly than he would if left to his own devices! I suppose we've each picked a couple of the other person's interests that we can get interested in (I do not follow F1 and he has absolutely no idea what's going on in Love Is Blind), but apparently having common interests is much less important than having common values anyway.
How would your life be less boring without your husband? Is the issue simply that he's a boring old fart who comes home from work and spends the rest of his time buried in his phone or fiddling with his bicycle? How much does he interact with you (and the kids)? Do you feel seen and heard and valued by him?