But we hate losing our friends no matter how sour things get. So how do you avoid the resentment trap before it begins? Identifying common conflict grounds is a great place to start. Here's an essential guide to good friendship dos and don'ts for you – and your friends!
• Do stay aware of your friend's feelings and ask if something doesn't seem right. Don't bug her too much and insist on knowing what's wrong – everyone deserves some privacy.
• Do keep an eye on each other when you're both out on the town. Don't feel you must stay glued together all night – you're not her bodyguard.
• Do respect her newest health and fitness craze and support her efforts. Don't start jogging with her at 4 a.m. if you hate it – she can stay on track with or without your participation.
• Do whatever she asks of you to help with her wedding day. Don't catch yourself doing all the grunt work while she spends her time at the spa.
• Do listen to her gripe about her husband or boyfriend. Don't add to her list of negative things to say about him – it's possible she'll hold this against you.
• Do give your honest opinion about her new outfit if she asks – she'll know if you're lying. Don't remind her what you think when she wears it again.
• Do celebrate her victories over a glass of wine. Don't party with her until last call and miss all your morning meetings.
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More great friendship tips
• Do help her screen potential beaus from an online dating service. Don't make it your part-time job to find her the right match.
• Do cherish and be caring toward her new baby. Don't become the emergency babysitter every Thursday night if you don't want to.
• Do let her date your brother. Don't get involved.
• Do take time to do something nice if she's been off sick for a week. Don't do all her laundry while she watches TV.
• Do bring a thoughtful housewarming gift to her new home. Don't scan her home on your return visit to see where she's placed it.
• Do go on a blind date she set up for you. Don't go twice if it's painful.
• Do lend her your favourite piece of jewellery, but set a date for when you want it back. Don't put up with forgetfulness when she's borrowed something important to you.
• Do drop everything when she calls sobbing over the phone. Don't put your life on hold for the fifth time that week.
• Do be her wing woman if her favourite band comes to town. Don't be the taxi so she can have a wild time while you check your watch every hour.
• Do acknowledge when she's complimented you, your family or your home. Don't downplay the compliment – it says her opinion doesn't matter to you.
Read more: Top reasons you need a best friend.
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